msm7x30: Remove redundant CFLAGS

* These are set in qcom_target.mk

Change-Id: I55411deef99b6c15e72f01e48527f8895a5791e6
msm7x30: Use cortex-a8 cpu variant

Change-Id: I7f8484e152db006306d293b6b4d0ce8cabc19e9b
msm7x30: Include google's media codecs

* Deduplicate the codecs

Change-Id: I2c454b2ce680f172ec2ae4417ea186fa6eb4fff6