sde: Add support for hwc version 1.4

- Add support for setPowerMode.
- Treat HWC_POWER_MODE_DOZE/HWC_POWER_MODE_DOZE_SUSPEND equally.
- Support getActiveConfig/setActiveConfig only at 0th config for now.

Change-Id: I4684423bb8e3c66cb2289fcabcf13f717168dc9d
16 files changed