libhardware: Disable rotation animation on External

- Added two new flags to used to inform HWC about
  rotation and roation animation to HWC
- This is used to disable rotation animation on external

Change-Id: I05a9796781dcda088ae6cd64481cd4e581d5cf9e
CRs-fixed: 453747
Merge pull request #2 from CyanogenMod/cm-11.0

libhardware: Disable rotation animation on External