Since page tables could either reside either in sysmem
or vidmem, use gk20a_mem_get_base_addr() to get the
base address for buffer
This API will take care of returning proper base address
Jira DNVGPU-20
Change-Id: I3422b51c3ffb8fb86f1dc5095263fc8f19dae44d
Signed-off-by: Deepak Nibade <dnibade@nvidia.com>
Reviewed-on: http://git-master/r/1206407
(cherry picked from commit 3c4b22c35b2c4eec33234c2f8dccd9de9422d093)
Reviewed-on: http://git-master/r/1210962
GVS: Gerrit_Virtual_Submit
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>