mtd: devices: add const qualifiers

Be a bit stricter and add few more 'const' qualifiers.
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>

drivers/mtd/devices/bcm47xxsflash.c

@@ -10,7 +10,7 @@
 MODULE_LICENSE("GPL");
 MODULE_DESCRIPTION("Serial flash driver for BCMA bus");
 
-static const char *probes[] = { "bcm47xxpart", NULL };
+static const char * const probes[] = { "bcm47xxpart", NULL };
 
 static int bcm47xxsflash_read(struct mtd_info *mtd, loff_t from, size_t len,
 			      size_t *retlen, u_char *buf)

drivers/mtd/devices/docg3.c

@@ -123,7 +123,7 @@ static inline void doc_flash_address(struct docg3 *docg3, u8 addr)
 	doc_writeb(docg3, addr, DOC_FLASHADDRESS);
 }
 
-static char const *part_probes[] = { "cmdlinepart", "saftlpart", NULL };
+static char const * const part_probes[] = { "cmdlinepart", "saftlpart", NULL };
 
 static int doc_register_readb(struct docg3 *docg3, int reg)
 {