ENGR00174106-3 - EPDC fb: Support EPDC v2.0

ENGR00174106-3 - EPDC fb: Support EPDC v2.0

- Added new register definitions for EPDCv2.0
- Added support for 64 LUTs
- Conditionalized code for EPDC versions 1.0, 2.0, and 2.1
- Support for EPDC auto-waveform selection
- Support for collision test mode
- Support for PxP bypassing
- Support for LUT cancellation
- Support for new PxP limitations
- Support for collision minimization EPDC feature
- Added workaround for collision status bug (can't clear
IRQ before reading collision status for LUTs 16-63)

Signed-off-by: Danny Nold <dannynold@freescale.com>