brcmsmac: fix brcms_c_country_valid()

ccode is not NUL terminated.  Presumably insisting on a terminator makes
brcms_c_country_valid() return false when it's not intended.  ccode[2]
is sprom->leddc_on_time.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

drivers/net/wireless/brcm80211/brcmsmac/channel.c

@@ -183,8 +183,7 @@ static bool brcms_c_country_valid(const char *ccode)
 	 * chars.
 	 */
 	if (!((0x80 & ccode[0]) == 0 && ccode[0] >= 0x41 && ccode[0] <= 0x5A &&
-	      (0x80 & ccode[1]) == 0 && ccode[1] >= 0x41 && ccode[1] <= 0x5A &&
-	      ccode[2] == '\0'))
+	      (0x80 & ccode[1]) == 0 && ccode[1] >= 0x41 && ccode[1] <= 0x5A))
 		return false;
 
 	/*