[MTD] Make the function init_vmax301 static

The function init_vmax301 is needlessly defined global in
drivers/mtd/maps/vmax301.c, and this patch makes it static.

Signed-off-by: Dmitri Vorobiev <dmitri.vorobiev@movial.fi>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
diff --git a/drivers/mtd/maps/vmax301.c b/drivers/mtd/maps/vmax301.c
index 5a0c9a3..6d452dc 100644
--- a/drivers/mtd/maps/vmax301.c
+++ b/drivers/mtd/maps/vmax301.c
@@ -146,7 +146,7 @@
 	iounmap((void *)vmax_map[0].map_priv_1 - WINDOW_START);
 }
 
-int __init init_vmax301(void)
+static int __init init_vmax301(void)
 {
 	int i;
 	unsigned long iomapadr;