drm/amd/powerplay: Place the constant on the right side of the test

Move the constant on the right side of the comparison in order to
make the code easier to read.

Issue found by checkpatch script:
* WARNING: Comparisons should place the constant on the right side of
the test
Signed-off-by: Georgiana Chelu <georgiana.chelu93@gmail.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/powerplay/hwmgr/vega10_processpptables.c

@@ -1021,7 +1021,7 @@ static int get_vddc_lookup_table(
 
 	table = kzalloc(table_size, GFP_KERNEL);
 
-	if (NULL == table)
+	if (table == NULL)
 		return -ENOMEM;
 
 	table->count = vddc_lookup_pp_tables->ucNumEntries;
@@ -1130,12 +1130,12 @@ int vega10_pp_tables_initialize(struct pp_hwmgr *hwmgr)
 
 	hwmgr->pptable = kzalloc(sizeof(struct phm_ppt_v2_information), GFP_KERNEL);
 
-	PP_ASSERT_WITH_CODE((NULL != hwmgr->pptable),
+	PP_ASSERT_WITH_CODE((hwmgr->pptable != NULL),
 			    "Failed to allocate hwmgr->pptable!", return -ENOMEM);
 
 	powerplay_table = get_powerplay_table(hwmgr);
 
-	PP_ASSERT_WITH_CODE((NULL != powerplay_table),
+	PP_ASSERT_WITH_CODE((powerplay_table != NULL),
 		"Missing PowerPlay Table!", return -1);
 
 	result = check_powerplay_tables(hwmgr, powerplay_table);
@@ -1229,7 +1229,7 @@ int vega10_get_number_of_powerplay_table_entries(struct pp_hwmgr *hwmgr)
 	const ATOM_Vega10_State_Array *state_arrays;
 	const ATOM_Vega10_POWERPLAYTABLE *pp_table = get_powerplay_table(hwmgr);
 
-	PP_ASSERT_WITH_CODE((NULL != pp_table),
+	PP_ASSERT_WITH_CODE((pp_table != NULL),
 			"Missing PowerPlay Table!", return -1);
 	PP_ASSERT_WITH_CODE((pp_table->sHeader.format_revision >=
 			ATOM_Vega10_TABLE_REVISION_VEGA10),