sh_eth: add R8A77781 support

Add support for another ARM member of the R-Car family, R-Car M1A, also known as
R8A77781 -- it will share the code with previously added R8A77790.
Signed-off-by: NSergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

drivers/net/ethernet/renesas/Kconfig

@@ -8,7 +8,8 @@ config SH_ETH
 		(CPU_SUBTYPE_SH7710 || CPU_SUBTYPE_SH7712 || \
 		 CPU_SUBTYPE_SH7763 || CPU_SUBTYPE_SH7619 || \
 		 CPU_SUBTYPE_SH7724 || CPU_SUBTYPE_SH7734 || \
-		 CPU_SUBTYPE_SH7757 || ARCH_R8A7740 || ARCH_R8A7779)
+		 CPU_SUBTYPE_SH7757 || ARCH_R8A7740 || \
+		 ARCH_R8A7778 || ARCH_R8A7779)
 	select CRC32
 	select NET_CORE
 	select MII

drivers/net/ethernet/renesas/sh_eth.c

@@ -342,7 +342,7 @@ static void sh_eth_select_mii(struct net_device *ndev)
 #endif
 
 /* There is CPU dependent code */
-#if defined(CONFIG_ARCH_R8A7779)
+#if defined(CONFIG_ARCH_R8A7778) || defined(CONFIG_ARCH_R8A7779)
 #define SH_ETH_RESET_DEFAULT	1
 static void sh_eth_set_duplex(struct net_device *ndev)
 {
@@ -370,7 +370,7 @@ static void sh_eth_set_rate(struct net_device *ndev)
 	}
 }
 
-/* R8A7779 */
+/* R8A7778/9 */
 static struct sh_eth_cpu_data sh_eth_my_cpu_data = {
 	.set_duplex	= sh_eth_set_duplex,
 	.set_rate	= sh_eth_set_rate,