Merge remote-tracking branch...

Merge remote-tracking branch 'remotes/edgar/tags/edgar/xilinx-next-2018-01-26.for-upstream' into staging

Xilinx queue

# gpg: Signature made Fri 26 Jan 2018 10:17:01 GMT
# gpg:                using RSA key 0x29C596780F6BCA83
# gpg: Good signature from "Edgar E. Iglesias (Xilinx key) <edgar.iglesias@xilinx.com>"
# gpg:                 aka "Edgar E. Iglesias <edgar.iglesias@gmail.com>"
# Primary key fingerprint: AC44 FEDC 14F7 F1EB EDBF  4151 29C5 9678 0F6B CA83

* remotes/edgar/tags/edgar/xilinx-next-2018-01-26.for-upstream:
  xlnx-zynqmp: Connect the IPI device to the ZynqMP SoC
  xlnx-zynqmp-pmu: Connect the IPI device to the PMU
  xlnx-zynqmp-ipi: Initial version of the Xilinx IPI device
  xlnx-zynqmp-pmu: Connect the PMU interrupt controller
  xlnx-pmu-iomod-intc: Add the PMU Interrupt controller
  aarch64-softmmu.mak: Use an ARM specific config
  xlnx-zynqmp-pmu: Add the CPU and memory
  xlnx-zynqmp-pmu: Initial commit of the ZynqMP PMU
  microblaze: boot.c: Don't try to find NULL file

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>