[MTD] Make init_tqm_mtd function static

The init_tqm_mtd function does not need to be defined globally
in drivers/mtd/maps/tqm8xxl.c. Make it static.
Signed-off-by: NDmitri Vorobiev <dmitri.vorobiev@movial.fi>
Signed-off-by: NDavid Woodhouse <David.Woodhouse@intel.com>

drivers/mtd/maps/tqm8xxl.c

@@ -109,7 +109,7 @@ static struct mtd_partition tqm8xxl_fs_partitions[] = {
 };
 #endif
 
-int __init init_tqm_mtd(void)
+static int __init init_tqm_mtd(void)
 {
 	int idx = 0, ret = 0;
 	unsigned long flash_addr, flash_size, mtd_size = 0;