ARM: Rmobile: Rename CONFIG_RMOBILE to CONFIG_ARCH_RMOBILE

Signed-off-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
diff --git a/board/renesas/alt/alt.c b/board/renesas/alt/alt.c
index 3501a17..a1a26a6 100644
--- a/board/renesas/alt/alt.c
+++ b/board/renesas/alt/alt.c
@@ -217,7 +217,7 @@
 }
 
 const struct rmobile_sysinfo sysinfo = {
-	CONFIG_RMOBILE_BOARD_STRING
+	CONFIG_ARCH_RMOBILE_BOARD_STRING
 };
 
 void reset_cpu(ulong addr)