msm8660-common: change cpu variant to cortex-a8

Change-Id: I1fb929f37d75e33e6b13094dc7d1d6ac45d2440f
msm8660-common: declear legacy FB

Change-Id: I226bcf156217e17c7924fdca58e686ef0a8b5940
BoardConfig: Enable QC AV enhancements

https://github.com/Team-Hydra/android_device_htc_msm8660-common/commit/cbf98d5315baafc2185a91ae6e040cbb17feef3e

Change-Id: I7351023aae28fbd8dc255898c29548f3c663a5a6
msm8660-common: Don't disable ARM PIE

Required to boot the phones. Without this patch servicemanager crashes.
https://github.com/Team-Hydra/android_device_htc_msm8660-common/commit/ddbdcfc3f5f5d91792c9735bca60fec5fb24680a

Change-Id: I32895c2276cf830a14d0a15afe2758e2b3265049
msm8660-common: Compile with gcc-4.6

msm8660 device wont boot with the 4.7 toolchain. Use old cm-10.1 gcc 4.6

https://github.com/Team-Hydra/android_device_htc_msm8660-common/commit/c65f9a3da96963cdcdd06e7e227c75fedab22f75

Change-Id: If4eb9272c4b53b03d24afd79b5f21a449982c0cb