HID: wacom: generic: support LEDs

Add support for the LEDs around the mode switch to the generic code path in
support of the second generation Intuos Pro.

Signed-off-by: Aaron Skomra <aaron.skomra@wacom.com>
Reviewed-by: Ping Cheng <pingc@wacom.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
diff --git a/drivers/hid/wacom_wac.h b/drivers/hid/wacom_wac.h
index 4feaf94..857ccee 100644
--- a/drivers/hid/wacom_wac.h
+++ b/drivers/hid/wacom_wac.h
@@ -79,6 +79,7 @@
 #define WAC_CMD_ICON_XFER               0x23
 #define WAC_CMD_ICON_BT_XFER            0x26
 #define WAC_CMD_DELETE_PAIRING          0x20
+#define WAC_CMD_LED_CONTROL_GENERIC     0x32
 #define WAC_CMD_UNPAIR_ALL              0xFF
 #define WAC_CMD_WL_INTUOSP2             0x82