msm7x30: cleanup & updates

* rearrange board config flags with descriptions
* remove deprecated & redundant flags
* set UMS as default
* enable vsync
liblights: updates for mango keyboard

Signed-off-by: Michael Bestas <mikeioannina@gmail.com>

Change-Id: I393d4115e375644f39f0302ef1a636ad3b96ec4b