Both ARM and ARM64 stubs will update the device tree that they pass to
the kernel.  In both cases they primarily need to add the same UEFI
related information, so the function can be shared.  Create a new FDT
related file for this to avoid use of architecture #ifdefs in
efi-stub-helper.c.
Signed-off-by: NRoy Franz <roy.franz@linaro.org>
[ Fixed memory node deletion code. ]
Signed-off-by: NMark Rutland <mark.rutland@arm.com>
Signed-off-by: NLeif Lindholm <leif.lindholm@linaro.org>
Acked-by: NGrant Likely <grant.likely@linaro.org>
Acked-by: NCatalin Marinas <catalin.marinas@arm.com>
Signed-off-by: NMatt Fleming <matt.fleming@intel.com>