m7-common: import custom graphics

Change-Id: Id004bbcb186e005b18917c9399e89a1ff0e493db
m7-common: recovery: use backlight instead of FBIOBLANK

Change-Id: I5d6af6763318cd7c87b5660f848299169c386f2a
m7-common: recovery: m7 uses RGBA8888

Change-Id: Ife40b4c3eb6b085956c949608cd4e793253399dc