drm/amdgpu: Fix warnings in gfxhub_v2_0.c

Fix the below checkpatch warnings:

WARNING: static const char * array should probably be static const char * const
+static const char *gfxhub_client_ids[] = {

WARNING: Prefer 'unsigned int' to bare use of 'unsigned'
+       unsigned i;

WARNING: Missing a blank line after declarations
+       u32 tmp;
+       tmp = RREG32_SOC15(GC, 0, mmGCVM_L2_PROTECTION_FAULT_CNTL);

Cc: Christian König <christian.koenig@amd.com>
Cc: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Srinivasan Shanmugam <srinivasan.shanmugam@amd.com>
Acked-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/amdgpu/gfxhub_v2_0.c

@@ -31,7 +31,7 @@
 
 #include "soc15_common.h"
 
-static const char *gfxhub_client_ids[] = {
+static const char * const gfxhub_client_ids[] = {
 	"CB/DB",
 	"Reserved",
 	"GE1",
@@ -332,7 +332,7 @@ static void gfxhub_v2_0_setup_vmid_config(struct amdgpu_device *adev)
 static void gfxhub_v2_0_program_invalidation(struct amdgpu_device *adev)
 {
 	struct amdgpu_vmhub *hub = &adev->vmhub[AMDGPU_GFXHUB(0)];
-	unsigned i;
+	unsigned int i;
 
 	for (i = 0 ; i < 18; ++i) {
 		WREG32_SOC15_OFFSET(GC, 0, mmGCVM_INVALIDATE_ENG0_ADDR_RANGE_LO32,
@@ -393,6 +393,7 @@ static void gfxhub_v2_0_set_fault_enable_default(struct amdgpu_device *adev,
 					  bool value)
 {
 	u32 tmp;
+
 	tmp = RREG32_SOC15(GC, 0, mmGCVM_L2_PROTECTION_FAULT_CNTL);
 	tmp = REG_SET_FIELD(tmp, GCVM_L2_PROTECTION_FAULT_CNTL,
 			    RANGE_PROTECTION_FAULT_ENABLE_DEFAULT, value);