gpu: nvgpu: PMU pmu.c/h header include cleanup

Some headers are not required to include in pmu.c/h as
lot of PMU code restructure happened, so removed headers
which not required anymore.

JIRA NVGPU-1972

Change-Id: Iead7f049d167cdaaaf7c75c2a5e19ae7b068fe6b
Signed-off-by: Mahantesh Kumbar <mkumbar@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/2110108
Reviewed-by: svc-mobile-coverity <svc-mobile-coverity@nvidia.com>
Reviewed-by: svc-mobile-misra <svc-mobile-misra@nvidia.com>
GVS: Gerrit_Virtual_Submit
Reviewed-by: Vijayakumar Subbu <vsubbu@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>

drivers/gpu/nvgpu/common/fifo/engines.c

@@ -26,6 +26,7 @@
 #include <nvgpu/timers.h>
 #include <nvgpu/bitops.h>
 #include <nvgpu/pmu.h>
+#include <nvgpu/pmu/mutex.h>
 #include <nvgpu/runlist.h>
 #include <nvgpu/engines.h>
 #include <nvgpu/engine_status.h>

drivers/gpu/nvgpu/common/fifo/runlist.c

@@ -29,6 +29,7 @@
 #include <nvgpu/bug.h>
 #include <nvgpu/dma.h>
 #include <nvgpu/rc.h>
+#include <nvgpu/pmu/mutex.h>
 
 void nvgpu_runlist_lock_active_runlists(struct gk20a *g)
 {