nfc: s3fwrn5: make array match static const

Don't populate the read-only array match on the stack, instead make
it static const.  Makes the object code smaller by over 310 bytes:

Before:
   text	   data	    bss	    dec	    hex	filename
   8304	   1084	    128	   9516	   252c	drivers/nfc/s3fwrn5/firmware.o

After:
   text	   data	    bss	    dec	    hex	filename
   7894	   1180	    128	   9202	   23f2	drivers/nfc/s3fwrn5/firmware.o
Signed-off-by: NColin Ian King <colin.king@canonical.com>
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>

drivers/nfc/s3fwrn5/firmware.c

@@ -336,7 +336,7 @@ static int s3fwrn5_fw_get_base_addr(
 	struct s3fwrn5_fw_cmd_get_bootinfo_rsp *bootinfo, u32 *base_addr)
 {
 	int i;
-	struct {
+	static const struct {
 		u8 version[4];
 		u32 base_addr;
 	} match[] = {