treewide: use dm_mdio_read/write/reset() wrappers

Use the new dm_mdio_read/write/reset() wrappers treewide, instead of
always getting and dereferencing MDIO operations structure pointer.

Signed-off-by: Marek BehĂșn <marek.behun@nic.cz>
Reviewed-by: Ramon Fried <rfried.dev@gmail.com>
Reviewed-by: Vladimir Oltean <vladimir.oltean@nxp.com>
diff --git a/test/dm/mdio_mux.c b/test/dm/mdio_mux.c
index 950f385..bfe3518 100644
--- a/test/dm/mdio_mux.c
+++ b/test/dm/mdio_mux.c
@@ -57,22 +57,22 @@
 	 * is selected to the selection #.  Just reading that register from
 	 * either of the child buses should return the id of the child bus
 	 */
-	reg = ops->read(mdio_ch0, SANDBOX_PHY_ADDR, MDIO_DEVAD_NONE,
-			SANDBOX_PHY_REG_CNT - 1);
+	reg = dm_mdio_read(mdio_ch0, SANDBOX_PHY_ADDR, MDIO_DEVAD_NONE,
+			   SANDBOX_PHY_REG_CNT - 1);
 	ut_asserteq(reg, 0);
 
-	reg = ops->read(mdio_ch1, SANDBOX_PHY_ADDR, MDIO_DEVAD_NONE,
-			SANDBOX_PHY_REG_CNT - 1);
+	reg = dm_mdio_read(mdio_ch1, SANDBOX_PHY_ADDR, MDIO_DEVAD_NONE,
+			   SANDBOX_PHY_REG_CNT - 1);
 	ut_asserteq(reg, 1);
 
 	mmops->select(mux, MDIO_MUX_SELECT_NONE, 5);
-	reg = ops_parent->read(mdio, SANDBOX_PHY_ADDR, MDIO_DEVAD_NONE,
-			SANDBOX_PHY_REG_CNT - 1);
+	reg = dm_mdio_read(mdio, SANDBOX_PHY_ADDR, MDIO_DEVAD_NONE,
+			   SANDBOX_PHY_REG_CNT - 1);
 	ut_asserteq(reg, 5);
 
 	mmops->deselect(mux, 5);
-	reg = ops_parent->read(mdio, SANDBOX_PHY_ADDR, MDIO_DEVAD_NONE,
-			SANDBOX_PHY_REG_CNT - 1);
+	reg = dm_mdio_read(mdio, SANDBOX_PHY_ADDR, MDIO_DEVAD_NONE,
+			   SANDBOX_PHY_REG_CNT - 1);
 	ut_asserteq(reg, (u16)MDIO_MUX_SELECT_NONE);
 
 	return 0;