sde: Enable GPU mode composition for primary display.

1. Load sde core and create primary display in hwc session.
2. Prepare layer stack for primary display.
3. Open open fb node for primary display.
4. Add support to select a composition strategy using strategy
   interface and allocate mdss resources using resource manager
   in composition manager.
5. Manage mdss pipe state machine and configure pipes for layer
   stack in resource manager.
6. Add default strategy to select GPU composition.
7. Add support for hw layer to atomic commit translation.

Change-Id: I5a5537dbcb28727e16b0c055e17a387696f6dac8
30 files changed