configs/zynqmp_kria_xxx_defconfig: uboot dp pll patch

configs/zynqmp_kria_xxx_defconfig: uboot dp pll patch

This patch fixes the DP audio and video PLL configurations for the zynqmp-sm-k26-revA som.
It needs to be applied for both the kv260 and kr260 starter kits.

The Linux DP driver expects the DP to be using the following PLL config:
  - DP video PLL should use the VPLL (0x0)
  - DP audio PLL should use the RPLL (0x3)
  - DP system time clock PLL should use RPLL (0x3)

Register 0xFD1A0070 configures the DP video PLL.
Register 0xFD1A0074 configures the DP audio PLL.
Register 0xFD1A007C configures the DP system time clock PLL.

This patch was build and run tested on a zynqmp-kria-kv260 target board.

Upstream-Status: submitted (https://lore.kernel.org/all/fa7e9abc419c9d7648405d1c62367dbe701d09b8.1652709736[email protected]/)
This patch will be removed from buildroot in a future release when no longer necessary.

Signed-off-by: Neal Frager <[email protected]>
Reviewed-by: Luca Ceresoli <[email protected]>
Signed-off-by: Peter Korsgaard <[email protected]>