HID: ThrustMaster FF driver is no longer experimental

There is no need to keep a few years old ThrustMaster force-feedback
driver as experimental.

HID_FF is currently marked experimental anyway, so this is even redundant.
Signed-off-by: Jiri Kosina <jkosina@suse.cz>

drivers/hid/usbhid/Kconfig

@@ -88,8 +88,8 @@ config PANTHERLORD_FF
 	  or adapter and want to enable force feedback support for it.
 
 config THRUSTMASTER_FF
-	bool "ThrustMaster devices support (EXPERIMENTAL)"
-	depends on HID_FF && EXPERIMENTAL
+	bool "ThrustMaster devices support"
+	depends on HID_FF
 	select INPUT_FF_MEMLESS if USB_HID
 	help
 	  Say Y here if you have a THRUSTMASTER FireStore Dual Power 2 or