sony-laptop - Move sony-laptop.txt to Documentation/laptops

Also update references to sony-laptop.txt in Kconfig.

Signed-off-by: Carlos Corbacho <carlos@strangeworlds.co.uk>
Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
CC: Mattia Dongili <malattia@linux.it>
Signed-off-by: Len Brown <len.brown@intel.com>
diff --git a/drivers/misc/Kconfig b/drivers/misc/Kconfig
index 85ee436..830f51c 100644
--- a/drivers/misc/Kconfig
+++ b/drivers/misc/Kconfig
@@ -192,7 +192,7 @@
 	  screen brightness control, Fn keys and allows powering on/off some
 	  devices.
 
-	  Read <file:Documentation/sony-laptop.txt> for more information.
+	  Read <file:Documentation/laptops/sony-laptop.txt> for more information.
 
 config SONYPI_COMPAT
 	bool "Sonypi compatibility"