Merge tag 'zynqmp-dt-for-v5.0' of https://github.com/Xilinx/linux-xlnx into next/dt

arm64: dts: zynqmp: DT changes for v5.0

- Fix node names
- Fix wakeup-source
- Wire ddrc
- Label gpio controller (PS gpio)

* tag 'zynqmp-dt-for-v5.0' of https://github.com/Xilinx/linux-xlnx:
  arm64: dts: zynqmp: Fix node names which contain "_"
  arm64: dts: zynqmp: Add missing gpio-controller to ps gpio
  arm64: dts: zynqmp: Add DDRC node
  arm64: dts: zynqmp: replace gpio-key,wakeup with wakeup-source property
  arm64: dts: zynqmp: Use mmc@ instead sdhci@

Signed-off-by: Arnd Bergmann <arnd@arndb.de>