Makefile: disable variable may be uninitialized error

Change-Id: I853a53a173b0aa8bd921f96d9bbe71a774ad5631
dts: remove erroring 720 display code

Change-Id: If784b09f59452e901a8c8aa074021030d4745873
htc_util: remove a bit of debugging

Change-Id: Ifcf3df434a8ce440856ef531684c3a8050a3a043
defconfig: update

Change-Id: Ie138d59e4de7ea288e32c4a4d9d7a05cd575b870