ARM: rmobile: Fix CONFIG_RMOBILE_BOARD_STRING

Rename CONFIG_RMOBILE_BOARD_STRING to CONFIG_ARCH_RMOBILE_BOARD_STRING
to make things consistent, no functional change.

Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Cc: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
diff --git a/board/renesas/blanche/blanche.c b/board/renesas/blanche/blanche.c
index 5dc3073..3ce633c 100644
--- a/board/renesas/blanche/blanche.c
+++ b/board/renesas/blanche/blanche.c
@@ -469,7 +469,7 @@
 }
 
 const struct rmobile_sysinfo sysinfo = {
-	CONFIG_RMOBILE_BOARD_STRING
+	CONFIG_ARCH_RMOBILE_BOARD_STRING
 };
 
 void reset_cpu(ulong addr)
diff --git a/include/configs/blanche.h b/include/configs/blanche.h
index ae3213f..c8af6e9 100644
--- a/include/configs/blanche.h
+++ b/include/configs/blanche.h
@@ -11,7 +11,7 @@
 #define __BLANCHE_H
 
 #undef DEBUG
-#define CONFIG_RMOBILE_BOARD_STRING "Blanche"
+#define CONFIG_ARCH_RMOBILE_BOARD_STRING "Blanche"
 
 #include "rcar-gen2-common.h"
 
diff --git a/scripts/config_whitelist.txt b/scripts/config_whitelist.txt
index bbc44e3..cf95a29 100644
--- a/scripts/config_whitelist.txt
+++ b/scripts/config_whitelist.txt
@@ -1674,7 +1674,6 @@
 CONFIG_RFSPART
 CONFIG_RIO
 CONFIG_RMII
-CONFIG_RMOBILE_BOARD_STRING
 CONFIG_RMSTP0_ENA
 CONFIG_RMSTP10_ENA
 CONFIG_RMSTP11_ENA