misc NanoPi Fire3 changes

cleaned up u-boot DTB assignment; enabled RTL8188EU Wi-Fi adapter; disabled
thermal zone emulation configuration

patch/u-boot/u-boot-s5p6818/update-nanopi-fire3-support.patch

@@ -149,10 +149,10 @@ index 0000000..1550b5f
 +obj-y	:= board.o
 diff --git a/board/s5p6818/nanopifire3/board.c b/board/s5p6818/nanopifire3/board.c
 new file mode 100644
-index 0000000..01e84d4
+index 0000000..5870d76
 --- /dev/null
 +++ b/board/s5p6818/nanopifire3/board.c
-@@ -0,0 +1,149 @@
+@@ -0,0 +1,151 @@
 +/*
 + * (C) Copyright 2016 Nexell
 + * Hyunseok, Jung <hsjung@nexell.co.kr>
@@ -264,12 +264,14 @@ index 0000000..01e84d4
 +
 +#define ETHER_MAC_TAG	"ethmac"
 +
-+#define DEFAULT_DTB	"s5p6818-nanopi-fire3.dtb"
-+
 +int board_late_init(void)
 +{
-+	//#### move to configuration ####
-+	setenv("fdtfile", DEFAULT_DTB);
++	char dtbname[256];
++
++	strcpy(dtbname, CONFIG_DEFAULT_DEVICE_TREE);
++	strcat(dtbname, ".dtb");
++
++	setenv("fdtfile", dtbname);
 +
 +	if( getenv("ethaddr") == NULL ) {
 +		char tmp[18];