thinkpad-acpi - Move thinkpad-acpi.txt to Documentation/laptops

Also update references to thinkpad-acpi.txt in Kconfig.

Signed-off-by: Carlos Corbacho <carlos@strangeworlds.co.uk>
Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
CC: 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 c143a86..85ee436 100644
--- a/drivers/misc/Kconfig
+++ b/drivers/misc/Kconfig
@@ -211,8 +211,9 @@
 	  This is a driver for the IBM and Lenovo ThinkPad laptops. It adds
 	  support for Fn-Fx key combinations, Bluetooth control, video
 	  output switching, ThinkLight control, UltraBay eject and more.
-	  For more information about this driver see 
-	  <file:Documentation/thinkpad-acpi.txt> and <http://ibm-acpi.sf.net/> .
+	  For more information about this driver see
+	  <file:Documentation/laptops/thinkpad-acpi.txt> and
+	  <http://ibm-acpi.sf.net/> .
 
 	  This driver was formerly known as ibm-acpi.