video: hfi_iris2: Fix -Wpointer-to-int-cast

msm/vidc/hfi_iris2.c:170:3: error: cast to smaller integer type 'u32' (aka 'unsigned int') from 'u8 *' (aka 'unsigned char *') [-Werror,-Wpointer-to-int-cast]
                (u32)device->iface_q_table.align_virtual_addr, sid);
                ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Casting `device->iface_q_table.align_virtual_addr` to uintptr_t first, then
cast to u32 to avoid pointer-to-int-cast errors.

Bug: 171827315
Bug: 181191123
Signed-off-by: lucaswei <lucaswei@google.com>
Change-Id: I687af3df978841d4cba8ea658176187d1fb56837