Add overlays support for upstream kernel

patch/kernel/sunxi-dev/add-overlay-compilation-support.patch

@@ -1,8 +1,22 @@
+diff --git a/.gitignore b/.gitignore
+index 705e099..c85ba43 100644
+--- a/.gitignore
++++ b/.gitignore
+@@ -14,7 +14,8 @@
+ *.bin
+ *.bz2
+ *.c.[012]*.*
+-*.dtb
++*.dtb*
++*.scr
+ *.dtb.S
+ *.dwo
+ *.elf
 diff --git a/arch/arm/Makefile b/arch/arm/Makefile
-index ab30cc63..cc176797 100644
+index e83f516..89f7630 100644
 --- a/arch/arm/Makefile
 +++ b/arch/arm/Makefile
-@@ -339,6 +339,12 @@ $(INSTALL_TARGETS):
+@@ -345,6 +345,12 @@ $(INSTALL_TARGETS):
  %.dtb: | scripts
  	$(Q)$(MAKE) $(build)=$(boot)/dts MACHINE=$(MACHINE) $(boot)/dts/$@
  
@@ -15,22 +29,11 @@ index ab30cc63..cc176797 100644
  PHONY += dtbs dtbs_install
  
  dtbs: prepare scripts
-diff --git a/arch/arm/boot/.gitignore b/arch/arm/boot/.gitignore
-index 3c79f859..eaaeb17e 100644
---- a/arch/arm/boot/.gitignore
-+++ b/arch/arm/boot/.gitignore
-@@ -3,4 +3,5 @@ zImage
- xipImage
- bootpImage
- uImage
--*.dtb
-+*.dtb*
-+*.scr
 diff --git a/arch/arm64/Makefile b/arch/arm64/Makefile
-index b9a4a934..54e3c38d 100644
+index b481b4a..f1b42f5 100644
 --- a/arch/arm64/Makefile
 +++ b/arch/arm64/Makefile
-@@ -119,6 +119,12 @@ zinstall install:
+@@ -134,6 +134,12 @@ zinstall install:
  %.dtb: scripts
  	$(Q)$(MAKE) $(build)=$(boot)/dts $(boot)/dts/$@
  
@@ -43,41 +46,21 @@ index b9a4a934..54e3c38d 100644
  PHONY += dtbs dtbs_install
  
  dtbs: prepare scripts
-diff --git a/arch/arm64/boot/dts/.gitignore b/arch/arm64/boot/dts/.gitignore
-index b60ed208..5d65b54b 100644
---- a/arch/arm64/boot/dts/.gitignore
-+++ b/arch/arm64/boot/dts/.gitignore
-@@ -1 +1,2 @@
--*.dtb
-+*.dtb*
-+*.scr
 diff --git a/scripts/Makefile.dtbinst b/scripts/Makefile.dtbinst
-index 34614a4..42e4937 100644
+index 7301ab5..a08f9be 100644
 --- a/scripts/Makefile.dtbinst
 +++ b/scripts/Makefile.dtbinst
-@@ -20,7 +20,16 @@ include include/config/auto.conf
- include scripts/Kbuild.include
+@@ -20,6 +20,9 @@ include scripts/Kbuild.include
  include $(src)/Makefile
  
-+PHONY += __dtbs_install_prep
-+__dtbs_install_prep:
-+ifeq ("$(dtbinst-root)", "$(obj)")
-+	$(Q)mkdir -p $(INSTALL_DTBS_PATH)
-+endif
-+
- dtbinst-files	:= $(dtb-y)
+ dtbinst-files	:= $(sort $(dtb-y) $(if $(CONFIG_OF_ALL_DTBS), $(dtb-)))
 +dtboinst-files	:= $(dtbo-y)
 +script-files	:= $(scr-y)
 +readme-files	:= $(dtbotxt-y)
- dtbinst-dirs	:= $(dts-dirs)
+ dtbinst-dirs	:= $(subdir-y) $(subdir-m)
  
  # Helper targets for Installing DTBs into the boot directory
-@@ -29,13 +38,24 @@ quiet_cmd_dtb_install =	INSTALL $<
- 
- install-dir = $(patsubst $(dtbinst-root)%,$(INSTALL_DTBS_PATH)%,$(obj))
- 
-+$(dtbinst-files) $(dtboinst-files) $(readme-files) $(script-files) $(dtbinst-dirs): | __dtbs_install_prep
-+
+@@ -31,10 +34,19 @@ install-dir = $(patsubst $(dtbinst_root)%,$(INSTALL_DTBS_PATH)%,$(obj))
  $(dtbinst-files): %.dtb: $(obj)/%.dtb
  	$(call cmd,dtb_install,$(install-dir))
  
@@ -100,20 +83,10 @@ index 34614a4..42e4937 100644
  
  .PHONY: $(PHONY)
 diff --git a/scripts/Makefile.lib b/scripts/Makefile.lib
-index 0a07f901..5ccd3490 100644
+index ba0643e..26e6af4 100644
 --- a/scripts/Makefile.lib
 +++ b/scripts/Makefile.lib
-@@ -278,6 +278,9 @@ cmd_gzip = (cat $(filter-out FORCE,$^) | gzip -n -f -9 > $@) || \
- # ---------------------------------------------------------------------------
- DTC ?= $(objtree)/scripts/dtc/dtc
- 
-+# Overlay support
-+DTC_FLAGS += -@ -Wno-unit_address_format -Wno-simple_bus_reg
-+
- # Disable noisy checks by default
- ifeq ($(KBUILD_ENABLE_EXTRA_GCC_CHECKS),)
- DTC_FLAGS += -Wno-unit_address_vs_reg
-@@ -312,6 +315,23 @@ cmd_dtc = mkdir -p $(dir ${dtc-tmp}) ; \
+@@ -320,6 +320,23 @@ cmd_dtc = mkdir -p $(dir ${dtc-tmp}) ; \
  $(obj)/%.dtb: $(src)/%.dts FORCE
  	$(call if_changed_dep,dtc)
  
@@ -121,8 +94,8 @@ index 0a07f901..5ccd3490 100644
 +cmd_dtco = mkdir -p $(dir ${dtc-tmp}) ; \
 +	$(CPP) $(dtc_cpp_flags) -x assembler-with-cpp -o $(dtc-tmp) $< ; \
 +	$(DTC) -O dtb -o $@ -b 0 \
-+		-i $(dir $<) $(DTC_FLAGS) \
-+		-d $(depfile).dtc.tmp $(dtc-tmp) ; \
++                $(addprefix -i,$(dir $<) $(DTC_INCLUDE)) $(DTC_FLAGS) \
++                -d $(depfile).dtc.tmp $(dtc-tmp) ; \
 +	cat $(depfile).pre.tmp $(depfile).dtc.tmp > $(depfile)
 +
 +$(obj)/%.dtbo: $(src)/%.dts FORCE