msm7x30: unify the liblights and libsensors

 - There is no need to have different sensors and light hals
   for devices that share a pretty similar configuration.
 - Merged from vivow/speedy/glacier sources

Change-Id: I7fa4c095bf73e0be2a1eadc852f2d513769f2837

Conflicts:
	BoardConfigCommon.mk