Move all code related to ctrl devnode to under Linux module.
JIRA NVGPU-16
Change-Id: I834b46ec4172076d7bde459168f1e6bc8c5d6c0c
Signed-off-by: Terje Bergstrom <tbergstrom@nvidia.com>
Reviewed-on: http://git-master/r/1330802
Reviewed-by: svccoveritychecker <svccoveritychecker@nvidia.com>
GVS: Gerrit_Virtual_Submit
