msm: adsprpc: handle map/unmap properly for 32-bit applications

Copy data to architecture specific structures from default 64-bit
structures, as 32-bit structures will result in buffer overflow
when copied from the default 64-bit structures. Remove dependency
on TZ scm functions.

Change-Id: I04c1553dfb7f69d15578a8dde3a62be27150ce6f
Acked-by: Thyagarajan Venkatanarayanan <venkatan@qti.qualcomm.com>
Signed-off-by: Tharun Kumar Merugu <mtharu@codeaurora.org>