Move a few things to liquid.mk

Change-Id: Ifa4e6fee9796e7d8ee20bb90f8a7618206f55dc2

Conflicts:
	cm.mk
	device_moto_msm8960.mk

	new file:   config/media_codecs_aosp.xml
	modified:   device_moto_msm8960.mk
	modified:   liquid.mk

Change-Id: I315b0779b74aa8083f5140ddbbb4d37c6804848a