drm/amd/powerplay: fix warning of cast to pointer from integer of different size.

Signed-off-by: NRex Zhu <Rex.Zhu@amd.com>
Reviewed-by: NAlex Deucher <alexander.deucher@amd.com>

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

@@ -4956,12 +4956,12 @@ static int tonga_get_pp_table_entry_callback_func(struct pp_hwmgr *hwmgr,
 
 	ATOM_Tonga_SCLK_Dependency_Table *sclk_dep_table =
 			(ATOM_Tonga_SCLK_Dependency_Table *)
-			(((uint64_t)powerplay_table) +
+			(((unsigned long)powerplay_table) +
 			le16_to_cpu(powerplay_table->usSclkDependencyTableOffset));
 
 	ATOM_Tonga_MCLK_Dependency_Table *mclk_dep_table =
 			(ATOM_Tonga_MCLK_Dependency_Table *)
-			(((uint64_t)powerplay_table) +
+			(((unsigned long)powerplay_table) +
 			le16_to_cpu(powerplay_table->usMclkDependencyTableOffset));
 
 	/* The following fields are not initialized here: id orderedList allStatesList */