HID: Wacom Graphire Bluetooth driver

Based on the work by Andrew Zabolotny, an HID driver for the Bluetooth
Wacom tablet. This is required as it uses a slightly different
protocols from what's currently support by the drivers/input/wacom*
driver, and those only support USB.

A user-space patch is required to activate mode 2 of the Wacom tablet,
as hidp does not support hid_output_raw_report.

Signed-off-by: Bastien Nocera <hadess@hadess.net>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
diff --git a/drivers/hid/Kconfig b/drivers/hid/Kconfig
index 7e67dcb..21edf40 100644
--- a/drivers/hid/Kconfig
+++ b/drivers/hid/Kconfig
@@ -271,6 +271,13 @@
 	  Say Y here if you have a THRUSTMASTER FireStore Dual Power 2 or
 	  a THRUSTMASTER Ferrari GT Rumble Force or Force Feedback Wheel.
 
+config HID_WACOM
+	tristate "Wacom Bluetooth devices support" if EMBEDDED
+	depends on BT_HIDP
+	default !EMBEDDED
+	---help---
+	Support for Wacom Graphire Bluetooth tablet.
+
 config ZEROPLUS_FF
 	tristate "Zeroplus based game controller support"
 	depends on USB_HID