Add new API gr_gk20a_get_ctx_id() to get/extract
context id from GR context
Bug 200156699
Change-Id: If0e8887a9a6b139cd795bf03f5def64fd664d12b
Signed-off-by: Deepak Nibade <dnibade@nvidia.com>
Reviewed-on: http://git-master/r/927130
GVS: Gerrit_Virtual_Submit
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>