dma: qcom: Fix GPI compile errors for 32-bit builds

Update format specifiers to conform to those recommended
in the kernel documentation. Set upper 32-bit addresses
to 0 on 32-bit builds.

Change-Id: I076ce1f9930ea421d33d9f6e8f08d713176cc3fb
Signed-off-by: Siva Kumar Akkireddi <sivaa@codeaurora.org>