efi/arm: Show SMBIOS bank/device location in CPER and GHES error logs

Run dmi_memdev_walk() for arch arm* as other architectures do.
This improves error logging as the memory device handle is
translated now to the DIMM entry's name provided by the DMI handle.

Before:

 {1}[Hardware Error]:   DIMM location: not present. DMI handle: 0x0038

After:

 {1}[Hardware Error]:   DIMM location: N0 DIMM_A0

Signed-off-by: Marcin Benka <mbenka@marvell.com>
Signed-off-by: Robert Richter <rrichter@marvell.com>
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Matt Fleming <matt@codeblueprint.co.uk>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-efi@vger.kernel.org
Link: http://lkml.kernel.org/r/20190328193429.21373-4-ard.biesheuvel@linaro.org


Signed-off-by: Ingo Molnar <mingo@kernel.org>