Don't build when variant is requested.

Change-Id: I32adc414e5e68af6c409115583984a09d65b6587
qcom_display: add TARGET_PROVIDES_LIBLIGHT for msm8960 target

Change-Id: I53a29e75f78fe3daa1da056049aac527c2882cca

Conflicts:
	msm8960/Android.mk