HID: hid-input: Add parentheses to quell gcc warning

GCC reports a -Wlogical-not-parentheses warning here; therefore
add parentheses to shut it up and to express our intent more.
Signed-off-by: James C Boyd <jcboyd.dev@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>

drivers/hid/hid-input.c

@@ -1157,7 +1157,7 @@ void hidinput_hid_event(struct hid_device *hid, struct hid_field *field, struct
 		return;
 
 	/* report the usage code as scancode if the key status has changed */
-	if (usage->type == EV_KEY && !!test_bit(usage->code, input->key) != value)
+	if (usage->type == EV_KEY && (!!test_bit(usage->code, input->key)) != value)
 		input_event(input, EV_MSC, MSC_SCAN, usage->hid);
 
 	input_event(input, usage->type, usage->code, value);