gpu: nvgpu: Rename pmuif/pmu.h to pmuif/init.h

-Rename pmuif/pmu.h to pmuif/init.h as this file has interface for
 PMU RTOS init
-Had multiple pmu.h file in nvgpu which is causing doxygen
 Warning for PMU unit.

Change-Id: I6e0449d5ca141fb8d07d700df261f036b1044806
Signed-off-by: Mahantesh Kumbar <mkumbar@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/2220214
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>

arch/nvgpu-common.yaml

@@ -639,7 +639,7 @@ pmu:
                  include/nvgpu/pmu/pmuif/perfmon.h,
                  include/nvgpu/pmu/pmuif/pg.h,
                  include/nvgpu/pmu/pmuif/pg_rppg.h,
-                 include/nvgpu/pmu/pmuif/pmu.h,
+                 include/nvgpu/pmu/pmuif/init.h,
                  include/nvgpu/pmu/pmuif/bios.h,
                  include/nvgpu/pmu/pmuif/boardobj.h,
                  include/nvgpu/pmu/pmuif/clk.h,

drivers/gpu/nvgpu/include/nvgpu/pmu/msg.h

@@ -23,7 +23,7 @@
 #ifndef NVGPU_PMU_MSG_H
 #define NVGPU_PMU_MSG_H
 
-#include <nvgpu/pmu/pmuif/pmu.h>
+#include <nvgpu/pmu/pmuif/init.h>
 #include <nvgpu/pmu/pmuif/pg.h>
 #include <nvgpu/pmu/pmuif/perfmon.h>
 #include <nvgpu/pmu/pmuif/acr.h>

drivers/gpu/nvgpu/include/nvgpu/pmu/pmuif/nvgpu_cmdif.h

@@ -23,7 +23,7 @@
 #define NVGPU_PMUIF_NVGPU_CMDIF_H
 
 #include "cmn.h"
-#include "pmu.h"
+#include "init.h"
 #include "ap.h"
 #include "perfvfe.h"
 #include "thermsensor.h"