MLK-14314-5 dma: pxp-v3: divide whole pxp into four parts

MLK-14314-5 dma: pxp-v3: divide whole pxp into four parts

According to the pxp high level architecture diagram,
it is better to divide the whole big pxp module into
four sub-modules:
   1. 2D operation module(legacy pxp and input fetch & store).
   2. Dithering module.
   3. WFE_A module.
   4. WFE_B module.
This division will simplify driver implementations and
management.

Signed-off-by: Fancy Fang <chen.fang@nxp.com>
(cherry picked from commit 5e57840b41adb195515bd652d9624feaadf3448e)