Pull request for UEFI sub-system for efi-2020-04-rc5
This series fixes:
* UEFI Python tests CONFIG_OF_CONTROL=y.
* int to pointer cast warning for cmd/efidebug.c
* memory reservation even if fdt node is disabled
Now that the Python test is fixed reintroduce the reverted patch for
vexpress_ca9x4 to enable EFI_LOADER and define the dtb file name.