[dm][graphic] support dm mode

1. Add backlight framework for graphic.
2. Add framebuffer and plane, power, EDID for graphic framework
3. Add boot logo render for graphic
4. Update lcd.h

Signed-off-by: GuEe-GUI <2991707448@qq.com>

components/drivers/graphic/backlight/SConscript

@@ -0,0 +1,14 @@
+from building import *
+
+group   = []
+
+if not GetDepend(['RT_GRAPHIC_BACKLIGHT']):
+    Return('group')
+
+cwd     = GetCurrentDir()
+CPPPATH = [cwd + '/../../include']
+
+src     = ['backlight.c']
+
+group = DefineGroup('DeviceDrivers', src, depend = [''], CPPPATH = CPPPATH)
+Return('group')