HID: intel-ish-hid: add MODULE_DESCRIPTION()

Fix the 'make W=1' warning:
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/hid/intel-ish-hid/intel-ishtp.o

Signed-off-by: Jeff Johnson <quic_jjohnson@quicinc.com>
Acked-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Jiri Kosina <jkosina@suse.com>

drivers/hid/intel-ish-hid/ishtp/bus.c

@@ -932,4 +932,5 @@ static void __exit ishtp_bus_unregister(void)
 module_init(ishtp_bus_register);
 module_exit(ishtp_bus_unregister);
 
+MODULE_DESCRIPTION("ISHTP bus driver");
 MODULE_LICENSE("GPL");