drm/radeon/kms: DCE6.1 watermark updates for TN

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
diff --git a/drivers/gpu/drm/radeon/evergreen.c b/drivers/gpu/drm/radeon/evergreen.c
index 466db41..6c2b666 100644
--- a/drivers/gpu/drm/radeon/evergreen.c
+++ b/drivers/gpu/drm/radeon/evergreen.c
@@ -581,7 +581,7 @@
 	return 0;
 }
 
-static u32 evergreen_get_number_of_dram_channels(struct radeon_device *rdev)
+u32 evergreen_get_number_of_dram_channels(struct radeon_device *rdev)
 {
 	u32 tmp = RREG32(MC_SHARED_CHMAP);