Merge tag 'zynqmp-dt-for-v4.19-v2' of https://github.com/Xilinx/linux-xlnx into next/dt

arm: dts: zynqmp: DT changes for v4.19

- Use serdev for BT in zcu100
- Remove ep108
- Fix gpio-keys binding
- Add suport for Ultra96

* tag 'zynqmp-dt-for-v4.19-v2' of https://github.com/Xilinx/linux-xlnx

:
  arm64: dts: zynqmp: Add support for Avnet Ultra96 rev1 board
  arm64: dts: zynqmp: Remove #address/#size-cells from gpio-keys
  arm64: dts: zynqmp: Remove ep108 board
  arm64: dts: zynqmp: Use serdev for zcu100 BT

Signed-off-by: Olof Johansson <olof@lixom.net>