dmaengine: gpi: Add support for 32-bit kernel

Add new macros for GPI driver for 32-bit builds as
existing macros to obtain memory address will not work
for 32-bit builds.

CRs-Fixed: 2155696
Change-Id: I54a3b091bdaa6131c8a9bf89a0746cef065dbaa3
Signed-off-by: Jishnu Prakash <jprakash@codeaurora.org>