media: atomisp: hmm_bo: untag user pointers

The kernel ABI was extended to allow pass tagged user pointers.

Untag the pointers in this function.

Fixes: d9344522 ("uaccess: add noop untagged_addr definition")
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>