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: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/ethernet/renesas/Kconfig b/drivers/net/ethernet/renesas/Kconfig
index 24c2305..bed9841 100644
--- a/drivers/net/ethernet/renesas/Kconfig
+++ b/drivers/net/ethernet/renesas/Kconfig
@@ -8,7 +8,8 @@
 		(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