cm: Skip backuptool on GMS builds

Change-Id: Id0cf16551b87be2d218f04b0d5a158d88ace4e74
Merge branch 'cm-10.2' of git://github.com/CyanogenMod/android_vendor_cm into cd-4.3

Conflicts:
	config/common.mk

Change-Id: I6a91dd182373862b3780bd9bc40968900a208698