msm: ADSPRPC: Handle map and unmap in 32 bit images

Copy data to architecture specific structures from default 64 bit
structures, as 32 bit image structures will result in buffer overflow
when copied from 64 bit default structures.

Change-Id: I68e51fd128142e075528315f99bd34dd6b423239
Acked-by: Himateja Reddy <hmreddy@qti.qualcomm.com>
Signed-off-by: Tharun Kumar Merugu <mtharu@codeaurora.org>