Remove QCOM sensors repo

* This is an empty repo on AOSP and not used by any devices.

Change-Id: Ie2355ab94b08390d3bcbefac8c137b3ba545207d
Set up QCOM HAL variants

Change-Id: I1a6897145f34aaed0c03d76f9dea63c8896c76f5
Merge remote-tracking branch 'cm/cm-12.0' into cm-12.0

Conflicts:
	default.xml