Use nvgpu list APIs instead of linux list APIs
for to store buffer states in gk20a_dmabuf_priv.
Jira NVGPU-13
Change-Id: I9666b2435804b132bb86bb74c0b20590749b153f
Signed-off-by: Deepak Nibade <dnibade@nvidia.com>
Reviewed-on: http://git-master/r/1454689
Reviewed-by: Automatic_Commit_Validation_User
Reviewed-by: svccoveritychecker <svccoveritychecker@nvidia.com>
GVS: Gerrit_Virtual_Submit
Reviewed-by: Bharat Nihalani <bnihalani@nvidia.com>