ACPI: thinkpad-acpi: prepare light and LED for sysfs support

Do some preparatory work to add sysfs support to the thinklight and
thinkpad leds driver.

Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
Signed-off-by: Len Brown <len.brown@intel.com>
diff --git a/drivers/misc/Kconfig b/drivers/misc/Kconfig
index 297a48f..3a5d769 100644
--- a/drivers/misc/Kconfig
+++ b/drivers/misc/Kconfig
@@ -245,6 +245,8 @@
 	select HWMON
 	select NVRAM
 	depends on INPUT
+	select NEW_LEDS
+	select LEDS_CLASS
 	---help---
 	  This is a driver for the IBM and Lenovo ThinkPad laptops. It adds
 	  support for Fn-Fx key combinations, Bluetooth control, video