uboot-imx

MLK-18945-8 video: mxsfb: Update LCDIF driver for sec_mipi_dsi on iMX8MM

Update LCDIF driver for integrating with samsung mipi dsi controller on
iMX8MM platform.

The changes include:
1. Fix build warning for ARM64 platform.
2. Change max outstanding transactions req to 16 for better performance
   on system bus.
3. Set ENABLE signal to active low for valid data transfer.

Signed-off-by: Ye Li <ye.li@nxp.com>
(cherry picked from commit 43ee03181bd4e26ea389882dcd5285398438390d)
(cherry picked from commit 694351cb02474e195934f8a7068f225c094c0581)