drm/amd/pm/powerplay/smumgr/ci: use bitwise or for bitmasks addition

For bit mask addition, it is recommended to use or operator "|" instead
of numerical addition as the former is quicker and cleaner. Change
suggested by orplus.cocci Coccinelle semantic patch.
Reviewed-by: Evan Quan <evan.quan@amd.com>
Signed-off-by: Deepak R Varma <drv@mailo.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/pm/powerplay/smumgr/ci_smumgr.c

@@ -2203,7 +2203,7 @@ static int ci_program_mem_timing_parameters(struct pp_hwmgr *hwmgr)
 	struct smu7_hwmgr *data = (struct smu7_hwmgr *)(hwmgr->backend);
 
 	if (data->need_update_smu7_dpm_table &
-			(DPMTABLE_OD_UPDATE_SCLK + DPMTABLE_OD_UPDATE_MCLK))
+			(DPMTABLE_OD_UPDATE_SCLK | DPMTABLE_OD_UPDATE_MCLK))
 		return ci_program_memory_timing_parameters(hwmgr);
 
 	return 0;