cgtqmx6eval: Add Ethernet support

cgtqmx6eval can be populated with a AR8035 or KSZ9031 depending on the
board revision.

Add Ethernet support.

Signed-off-by: Otavio Salvador <otavio@ossystems.com.br>
diff --git a/include/micrel.h b/include/micrel.h
index 04c9ecf..e6d145d 100644
--- a/include/micrel.h
+++ b/include/micrel.h
@@ -20,6 +20,10 @@
 #define MII_KSZ9031_EXT_RGMII_TX_DATA_SKEW	0x6
 #define MII_KSZ9031_EXT_RGMII_CLOCK_SKEW	0x8
 
+/* Registers */
+#define MMD_ACCESS_CONTROL	0xd
+#define MMD_ACCESS_REG_DATA	0xe
+
 struct phy_device;
 int ksz9021_phy_extended_write(struct phy_device *phydev, int regnum, u16 val);
 int ksz9021_phy_extended_read(struct phy_device *phydev, int regnum);