net: sh_eth: Unify CONFIG_R8A779[01234] as CONFIG_RCAR_GEN2

Use the common RCAR_GEN2 config option instead of enumerating
each SoC and having a lengthy ifdef clause. No functional change.

Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Cc: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
Cc: Joe Hershberger <joe.hershberger@ni.com>
diff --git a/drivers/net/sh_eth.h b/drivers/net/sh_eth.h
index a0dcfca..ea4aa10 100644
--- a/drivers/net/sh_eth.h
+++ b/drivers/net/sh_eth.h
@@ -302,8 +302,7 @@
 #elif defined(CONFIG_R8A7740)
 #define SH_ETH_TYPE_GETHER
 #define BASE_IO_ADDR	0xE9A00000
-#elif defined(CONFIG_R8A7790) || defined(CONFIG_R8A7791) || \
-	defined(CONFIG_R8A7793) || defined(CONFIG_R8A7794)
+#elif defined(CONFIG_RCAR_GEN2)
 #define SH_ETH_TYPE_ETHER
 #define BASE_IO_ADDR	0xEE700200
 #elif defined(CONFIG_R7S72100)
@@ -514,8 +513,7 @@
 	ECMR_PRM = 0x00000001,
 #ifdef CONFIG_CPU_SH7724
 	ECMR_RTM = 0x00000010,
-#elif defined(CONFIG_R8A7790) || defined(CONFIG_R8A7791) || \
-	defined(CONFIG_R8A7793) || defined(CONFIG_R8A7794)
+#elif defined(CONFIG_RCAR_GEN2)
 	ECMR_RTM = 0x00000004,
 #endif