versatile: board configs: Use buffered writes on flash

This patch provides a support to use buffered writes on flash
for versatile and vexpress boards.

This will certainly increase the flash writes.

Signed-off-by: Jagannadha Sutradharudu Teki <402jagan@gmail.com>
diff --git a/include/configs/versatile.h b/include/configs/versatile.h
index 38f5302..a65c676 100644
--- a/include/configs/versatile.h
+++ b/include/configs/versatile.h
@@ -230,6 +230,7 @@
 #define CONFIG_SYS_FLASH_PROTECTION	/* The devices have real protection */
 #define CONFIG_SYS_FLASH_EMPTY_INFO	/* flinfo indicates empty blocks */
 
+#define CONFIG_SYS_FLASH_USE_BUFFER_WRITE /* use buffered writes */
 #endif
 
 #endif	/* __CONFIG_H */