net: sh-eth: Add support R8A7790

R8A7790 has the same sh-ether IP core as other SH/rmobile.
This patch adds support of R8A7790.

Signed-off-by: Hisashi Nakamura <hisashi.nakamura.ak@renesas.com>
Signed-off-by: Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com>
diff --git a/drivers/net/sh_eth.c b/drivers/net/sh_eth.c
index 6a78df0..9020752 100644
--- a/drivers/net/sh_eth.c
+++ b/drivers/net/sh_eth.c
@@ -4,6 +4,7 @@
  * Copyright (C) 2008, 2011 Renesas Solutions Corp.
  * Copyright (c) 2008, 2011 Nobuhiro Iwamatsu
  * Copyright (c) 2007 Carlos Munoz <carlos@kenati.com>
+ * Copyright (C) 2013  Renesas Electronics Corporation
  *
  * SPDX-License-Identifier:	GPL-2.0+
  */
@@ -409,6 +410,8 @@
 
 #if defined(CONFIG_CPU_SH7734) || defined(CONFIG_R8A7740)
 	sh_eth_write(eth, CONFIG_SH_ETHER_SH7734_MII, RMII_MII);
+#elif defined(CONFIG_R8A7790)
+	sh_eth_write(eth, sh_eth_read(eth, RMIIMR) | 0x1, RMIIMR);
 #endif
 	/* Configure phy */
 	ret = sh_eth_phy_config(eth);
@@ -432,7 +435,7 @@
 		sh_eth_write(eth, GECMR_100B, GECMR);
 #elif defined(CONFIG_CPU_SH7757) || defined(CONFIG_CPU_SH7752)
 		sh_eth_write(eth, 1, RTRATE);
-#elif defined(CONFIG_CPU_SH7724)
+#elif defined(CONFIG_CPU_SH7724) || defined(CONFIG_R8A7790)
 		val = ECMR_RTM;
 #endif
 	} else if (phy->speed == 10) {