Initialize PMU ucode only once, and skip on next GPU boot. Bug 1528275 Change-Id: Ifb95edb380518fae48fdc3b90b00b450fe30c439 Signed-off-by: Terje Bergstrom <tbergstrom@nvidia.com> Reviewed-on: http://git-master/r/428897 Reviewed-by: Shridhar Rasal <srasal@nvidia.com>