Thermal: Add a thermal notifier for user space

This patch registers a governor which will let the
user land manage the platform thermals. Whenever a
trip happens, this governor just notifies the user
space using kobj_uevent().

Signed-off-by: Durgadoss R <durgadoss.r@intel.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
diff --git a/drivers/thermal/Kconfig b/drivers/thermal/Kconfig
index 7e1b6de..f679eea 100644
--- a/drivers/thermal/Kconfig
+++ b/drivers/thermal/Kconfig
@@ -67,3 +67,9 @@
 	depends on THERMAL
 	help
 	  Enable this to manage platform thermals using a simple linear
+
+config USER_SPACE
+	bool "User_space thermal governor"
+	depends on THERMAL
+	help
+	  Enable this to let the user space manage the platform thermals.