qcom-common: Update postboot for 8974

 * Enable devfreq governor

Change-Id: I4e211a09d3e33df8254a94c02b0ae52539bb2883
qcom-common: Misc stuff for 8974

 * Don't copy all this thermald junk
 * Add media_codecs

Change-Id: I76fb67a5b45e0b24e12e56b438299c5dc529c938

Conflicts:
	qcom-common.mk

Change-Id: I76fb67a5b45e0b24e12e56b438299c5dc529c938