use cortex-a5 cpu variant

Needs:
http://review.cyanogenmod.org/#/c/46275/
http://review.cyanogenmod.org/#/c/49016/

Change-Id: I2a394447bfe782de1f9bc0db2fa9454c1ade4114
cmhw: enable vibration intensity tuning

Change-Id: I9aeba3d3166e52d7db2a0603b5c6cb7bd457fe79