arm: dts: imx8qm-mek: add u-boot, dm-spl for lpuart0

lpuart0 is the uart used by SPL and U-Boot proper, and DM_SERIAL
is enabled. Since uclass power domain is also enabled, to make
lpuart work properly, need add u-boot,dm-spl for lpuart power domain
and its parent.

Signed-off-by: Peng Fan <peng.fan@nxp.com>
1 file changed