drm/amd/powerplay: add dpm force multiple levels on cz/tonga/fiji/polaris (v2)

Allows you to force multiple levels rather than just one via the new
sysfs interrface.

v2: squash in:
drm/amd/powerplay: ensure clock level set by user is valid.
From Rex.

Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Eric Huang <JinHuiEric.Huang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
diff --git a/drivers/gpu/drm/amd/powerplay/amd_powerplay.c b/drivers/gpu/drm/amd/powerplay/amd_powerplay.c
index ce8d9bf..0527ae3 100644
--- a/drivers/gpu/drm/amd/powerplay/amd_powerplay.c
+++ b/drivers/gpu/drm/amd/powerplay/amd_powerplay.c
@@ -763,7 +763,7 @@
 }
 
 static int pp_dpm_force_clock_level(void *handle,
-		enum pp_clock_type type, int level)
+		enum pp_clock_type type, uint32_t mask)
 {
 	struct pp_hwmgr *hwmgr;
 
@@ -779,7 +779,7 @@
 		return 0;
 	}
 
-	return hwmgr->hwmgr_func->force_clock_level(hwmgr, type, level);
+	return hwmgr->hwmgr_func->force_clock_level(hwmgr, type, mask);
 }
 
 static int pp_dpm_print_clock_levels(void *handle,