bugfix: Guruplug: Use standard miiphy

call to reset PHY chip.

Current PHY Software Reset operation in guruplug does not
poll reset bit in control register to go to 0(auto clearing)
for making sure reset was successful.This patch uses standard
miiphy call miiphy_reset to make sure proper PHY reset operation.

Signed-off-by: Mahavir Jain <mjain@marvell.com>

board/Marvell/guruplug/guruplug.c

@@ -146,14 +146,7 @@ void mv_phy_88e1121_init(char *name)
 	miiphy_write(name, devadr, MV88E1121_PGADR_REG, 0);
 
 	/* reset the phy */
-	if (miiphy_read (name, devadr, PHY_BMCR, &reg) != 0) {
-		printf("Err..(%s) PHY status read failed\n", __FUNCTION__);
-		return;
-	}
-	if (miiphy_write (name, devadr, PHY_BMCR, reg | 0x8000) != 0) {
-		printf("Err..(%s) PHY reset failed\n", __FUNCTION__);
-		return;
-	}
+	miiphy_reset(name, devadr);
 
 	printf("88E1121 Initialized on %s\n", name);
 }