MLK-17225 gpu: imx: imx8_dprc: Directly map color component for 32bit RGB pixels

MLK-17225 gpu: imx: imx8_dprc: Directly map color component for 32bit RGB pixels

The DPR prefetch engine has the A/R/G/B_COMP_SEL fields in the
MODE_CTRL0 register to control the color component position
mapping from input to output.  We may choose to use direct mapping
and leave the pixel format to be handled by the display controllers.

Fixes: a0a3a82f90e9 ("MLK-15110-3 gpu: imx: Add i.MX8 DPR(Display Prefetch Resolve) support")
Reported-by: Richard Liu <xuegang.liu@nxp.com>
Signed-off-by: Liu Ying <victor.liu@nxp.com>