HID: logitech: Add support for Logitech G11 extra keys

The Logitech G11 keyboard is a cheap variant of the G15 without the LCD
screen. It uses the same layout for its extra and macro keys (G1 - G18,
M1-M3, MR) and - from the input subsystem's perspective - behaves just
like the G15, so we can treat it as such.

Tested it with my own keyboard.
Signed-off-by: Fabian Schindlatz <fabian.schindlatz@fau.de>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>

drivers/hid/hid-ids.h

@@ -760,6 +760,7 @@
 #define USB_DEVICE_ID_LOGITECH_RUMBLEPAD2	0xc218
 #define USB_DEVICE_ID_LOGITECH_RUMBLEPAD2_2	0xc219
 #define USB_DEVICE_ID_LOGITECH_G15_LCD		0xc222
+#define USB_DEVICE_ID_LOGITECH_G11		0xc225
 #define USB_DEVICE_ID_LOGITECH_G15_V2_LCD	0xc227
 #define USB_DEVICE_ID_LOGITECH_G510		0xc22d
 #define USB_DEVICE_ID_LOGITECH_G510_USB_AUDIO	0xc22e

drivers/hid/hid-lg-g15.c

@@ -872,6 +872,10 @@ static int lg_g15_probe(struct hid_device *hdev, const struct hid_device_id *id)
 }
 
 static const struct hid_device_id lg_g15_devices[] = {
+	/* The G11 is a G15 without the LCD, treat it as a G15 */
+	{ HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH,
+		USB_DEVICE_ID_LOGITECH_G11),
+		.driver_data = LG_G15 },
 	{ HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH,
 			 USB_DEVICE_ID_LOGITECH_G15_LCD),
 		.driver_data = LG_G15 },