revert alarm changes

Change-Id: I8575460b1b58a85545b888919df56268a072b259
SGX-BIN: DDK binaries and KM source 1.9@2291151

Includes new pixel formats.

Change-Id: I4a56e6bff9c477610f2ce30706831f66dcc9c651
sgxpvr: Don't ignore interrupts when preparing to sleep.

Setting the "ignore interrupts" (aka powering_down) mask too early in
sleeping preparation hits the assertion later on when the code tries
to wait for interrupt acknowledging command reception.
This also stops kernel complaints about unhandled interrupts from
the gfx.
Move the setting to just before we really power down the gfx cores.

Change-Id: I5451cca3573bde0a37687ebd08b039e45946652c
dirty-regions: not all Kindle Fires want this false

Change-Id: Ic322f0fee36a8fe41fbd7e4da8f7d75d2c3852f7