drm/radeon/kms: init pm on all chipsets

Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
diff --git a/drivers/gpu/drm/radeon/r300.c b/drivers/gpu/drm/radeon/r300.c
index 83378c3..e47af52 100644
--- a/drivers/gpu/drm/radeon/r300.c
+++ b/drivers/gpu/drm/radeon/r300.c
@@ -1324,6 +1324,8 @@
 	r300_errata(rdev);
 	/* Initialize clocks */
 	radeon_get_clock_info(rdev->ddev);
+	/* Initialize power management */
+	radeon_pm_init(rdev);
 	/* Get vram informations */
 	r300_vram_info(rdev);
 	/* Initialize memory controller (also test AGP) */