Move code that touches host registers to fifo HAL. This sorts out
some of the dependencies between fifo HAL and channel HAL.
Change-Id: I2bff0443ae1c1fa5608e620974b440696d1cfdc4
Signed-off-by: Terje Bergstrom <tbergstrom@nvidia.com>
Reviewed-on: http://git-master/r/1323385
Reviewed-by: svccoveritychecker <svccoveritychecker@nvidia.com>
GVS: Gerrit_Virtual_Submit