hal: PCM offload shouldn't enable all types of offloading

 * Some older versions of the DSP cannot offload audio streams
   for A/V content. Remove the extra check so each feature must
   be explicitly enabled on the device.

Change-Id: I23aac6be5bd160b61e54eab8761e97bbbd5ae045
hal: Fix the samplerate/bitwidth comparison

Change-Id: If507ee28d4b3333dd91af286f2653554590fd7c4
Merge branch 'cm-11.0' into kk_mkt