sh: sh7763rdp: Update sh7763rdp config

Add CONFIG_NET_MULTI in config file, because sh_eth changed new newwork API.

Signed-off-by: Nobuhiro Iwamatsu <iwamatsu.nobuhiro@renesas.com>
Signed-off-by: Ben Warren <biggerbadderben@gmail.com>

include/configs/sh7763rdp.h

@@ -118,6 +118,7 @@
 #define CONFIG_SYS_HZ				(CONFIG_SYS_CLK_FREQ / TMU_CLK_DIVIDER)
 
 /* Ether */
+#define CONFIG_NET_MULTI 1
 #define CONFIG_SH_ETHER 1
 #define CONFIG_SH_ETHER_USE_PORT (1)
 #define CONFIG_SH_ETHER_PHY_ADDR (0x01)