Lxde update (#2470)

* debian lxde  install package file.

* added missing dir

config/desktop/buster/environments/lxde/armbian/create_desktop_package.sh

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+# install lightdm greeter
+cp -R "${SRC}"/packages/blobs/desktop/lightdm "${destination}"/etc/armbian
+
+# install default desktop settings
+mkdir -p "${destination}"/etc/skel
+cp -R "${SRC}"/packages/blobs/desktop/skel/. "${destination}"/etc/skel
+
+# install logo for login screen
+mkdir -p "${destination}"/usr/share/pixmaps/armbian
+cp "${SRC}"/packages/blobs/desktop/icons/armbian.png "${destination}"/usr/share/pixmaps/armbian
+
+# install wallpapers
+mkdir -p "${destination}"/usr/share/backgrounds/armbian/
+cp "${SRC}"/packages/blobs/desktop/wallpapers/armbian*.jpg "${destination}"/usr/share/backgrounds/armbian/
+
+mkdir -p "${destination}"/usr/share/mate-background-properties
+cat <<-EOF > "${destination}"/usr/share/mate-background-properties/armbian.xml
+<?xml version="1.0"?>
+<!DOCTYPE wallpapers SYSTEM "gnome-wp-list.dtd">
+<wallpapers>
+  <wallpaper deleted="false">
+    <name>Armbian light</name>
+    <filename>/usr/share/backgrounds/armbian/armbian18-Dre0x-Minum-light-3840x2160.jpg</filename>
+    <options>zoom</options>
+    <pcolor>#ffffff</pcolor>
+    <scolor>#000000</scolor>
+  </wallpaper>
+  <wallpaper deleted="false">
+    <name>Armbian dark</name>
+    <filename>/usr/share/backgrounds/armbian/armbian03-Dre0x-Minum-dark-3840x2160.jpg</filename>
+    <options>zoom</options>
+    <pcolor>#ffffff</pcolor>
+    <scolor>#000000</scolor>
+  </wallpaper>
+</wallpapers>
+EOF
+
+mkdir -p "${destination}"/usr/share/glib-2.0/schemas
+cat <<-EOF > "${destination}"/usr/share/glib-2.0/schemas/org.gnome.desktop.background.gschema.override
+[org.gnome.desktop.background]
+picture-uri='file:///usr/share/backgrounds/armbian/armbian03-Dre0x-Minum-dark-3840x2160.jpg'
+show-desktop-icons=true
+EOF

config/desktop/buster/environments/lxde/custom/boards/pinebook-pro/armbian/create_desktop_package.sh

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+# install custom xorg for pinebook-pro
+cp -R "${SRC}"/packages/bsp/pinebook-pro/xorg.conf "${destination}"/etc/X11/xorg.conf.d/
+
+# install custom asound state for pinebook-pro
+cp -R "${SRC}"/packages/asouund.state/ "${destination}"/etc/

config/desktop/buster/environments/lxde/custom/boards/pinebook-pro/debian/postinst

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+echo "Hello from debian/postinst in the DDE for PineBook-Pro !"

config/desktop/buster/environments/lxde/custom/boards/pinebook-pro/packages

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+

config/desktop/buster/environments/lxde/debian/postinst

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+# overwrite stock lightdm greeter configuration
+if [ -d /etc/armbian/lightdm ]; then cp -R /etc/armbian/lightdm /etc/; fi
+
+# Disable Pulseaudio timer scheduling which does not work with sndhdmi driver
+if [ -f /etc/pulse/default.pa ]; then sed "s/load-module module-udev-detect$/& tsched=0/g" -i  /etc/pulse/default.pa; fi

config/desktop/buster/environments/lxde/support

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+csc