Change some vars and functions to be static.

Signed-off-by: Florian La Roche <Florian.LaRoche@gmail.com>
diff --git a/drivers/synopsys/ufs/dw_ufs.c b/drivers/synopsys/ufs/dw_ufs.c
index c7c8fc2..6bed981 100644
--- a/drivers/synopsys/ufs/dw_ufs.c
+++ b/drivers/synopsys/ufs/dw_ufs.c
@@ -183,7 +183,7 @@
 	return 0;
 }
 
-const ufs_ops_t dw_ufs_ops = {
+static const ufs_ops_t dw_ufs_ops = {
 	.phy_init		= dwufs_phy_init,
 	.phy_set_pwr_mode	= dwufs_phy_set_pwr_mode,
 };