qcom-common: use CM PowerHAL

Change-Id: Ica6e48c29792691e2bcd1d7e61b0ac30732de0f1
qcom-common: Disable the hardware AAC encoder

 * Not only does it break CTS, but it has mega bugs when used with the
   new camcorder pause functionality.
 * Disable it, since the performance benefit is minimal.

Change-Id: I2e3d27143115ec6bcb4be9b01f39c2b532b07032
qcom: allow properly querying of battery capacity

  * override the battery capacity sysfs path
  * requires patch to system/core/healthd/Android.mk

Change-Id: I807745028bafa15f2267a37206045e96d1c40e3b