nvgpu: ctrl: MISRA Rule 21.2 header guard fixes

MISRA rule 21.2 doesn't allow the use of macro names which start with
an underscore. These leading underscores are to be removed from the
macro names. This patch will fix such violations in ctrl by renaming
them to follow the convention, 'NVGPU_PARENT-DIR_HEADER-NAME' when
there is no keyword repetition between file name and directory or
'NVGPU_HEADER-NAME' when there is repetition.

JIRA NVGPU-1028

Change-Id: Ia7e5bf76dd2a8689e365bdeb27eac4b6e9ca4cfd
Signed-off-by: smadhavan <smadhavan@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1815657
Reviewed-by: svc-misra-checker <svc-misra-checker@nvidia.com>
Reviewed-by: Automatic_Commit_Validation_User
Reviewed-by: Konsta Holtta <kholtta@nvidia.com>
Reviewed-by: Adeel Raza <araza@nvidia.com>
Reviewed-by: Vijayakumar Subbu <vsubbu@nvidia.com>
GVS: Gerrit_Virtual_Submit
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>

drivers/gpu/nvgpu/ctrl/ctrlpmgr.h

@@ -1,7 +1,7 @@
 /*
  * Control pmgr state infrastructure
  *
- * Copyright (c) 2016, NVIDIA CORPORATION.  All rights reserved.
+ * Copyright (c) 2016-2018, NVIDIA CORPORATION.  All rights reserved.
  *
  * Permission is hereby granted, free of charge, to any person obtaining a
  * copy of this software and associated documentation files (the "Software"),
@@ -21,8 +21,8 @@
  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  * DEALINGS IN THE SOFTWARE.
  */
-#ifndef _ctrlpmgr_h_
-#define _ctrlpmgr_h_
+#ifndef NVGPU_CTRLPMGR_H
+#define NVGPU_CTRLPMGR_H
 
 #include "ctrlboardobj.h"
 
@@ -95,4 +95,4 @@ struct ctrl_pmgr_pwr_policy_limit_arbitration {
 		inputs[CTRL_PMGR_PWR_POLICY_MAX_LIMIT_INPUTS];
 };
 
-#endif
+#endif /* NVGPU_CTRLPMGR_H */