msm: ADSPRPC: Add support for 32-bit fastrpc driver

Enhance fastrpc driver to work both in 32-bit and 64-bit
mode by always passing the parameter to the remote end
in 64 bit format.

Change-Id: I4701627394315203fe08025ba78b37d583fdcd30
Acked-by: Himateja Reddy <hmreddy@qti.qualcomm.com>
Signed-off-by: Sathish Ambley <sathishambley@codeaurora.org>