ieee802154: || vs && in ieee802154_is_valid_extended_addr()

The ieee802154_is_valid_extended_addr() always returns true because
there is a typo.  The || should be &&.  Neither 0x0000000000000000ULL
nor 0xffffffffffffffffULL are valid addresses.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>

include/linux/ieee802154.h

@@ -209,7 +209,7 @@ static inline bool ieee802154_is_valid_extended_addr(const __le64 addr)
 	 * This is currently a workaround because neighbor discovery can't
 	 * deal with short addresses types right now.
 	 */
-	return ((addr != cpu_to_le64(0x0000000000000000ULL)) ||
+	return ((addr != cpu_to_le64(0x0000000000000000ULL)) &&
 		(addr != cpu_to_le64(0xffffffffffffffffULL)));
 }