phy/marvell: rename 88ec048 to 88e1318s and fix mscr1 addr

The marvell 88ec048's official part number is 88e1318s.  This patch renames
definitions in the driver to reflect this.

In addition, a minor bug fix has been added to write back the MSCR1 register
value properly.

Signed-off-by: Cyril Chemparathy <cyril@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/include/linux/marvell_phy.h b/include/linux/marvell_phy.h
index d0f0801..1ff81b5 100644
--- a/include/linux/marvell_phy.h
+++ b/include/linux/marvell_phy.h
@@ -12,7 +12,7 @@
 #define MARVELL_PHY_ID_88E1121R		0x01410cb0
 #define MARVELL_PHY_ID_88E1145		0x01410cd0
 #define MARVELL_PHY_ID_88E1240		0x01410e30
-#define MARVELL_PHY_ID_88EC048		0x01410e90
+#define MARVELL_PHY_ID_88E1318S		0x01410e90
 
 /* struct phy_device dev_flags definitions */
 #define MARVELL_PHY_M1145_FLAGS_RESISTANCE	0x00000001