panasonic-laptop: depends on ACPI

panasonic-laptop uses many acpi_*() functions so it should
depend on ACPI; otherwise there are approximately 70
warnings/errors generated.

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Acked-by: Harald Welte <laforge@gnumonks.org>
Signed-off-by: Len Brown <len.brown@intel.com>

drivers/misc/Kconfig

@@ -247,7 +247,7 @@ config MSI_LAPTOP
 
 config PANASONIC_LAPTOP
 	tristate "Panasonic Laptop Extras"
-	depends on X86 && INPUT
+	depends on X86 && INPUT && ACPI
         depends on BACKLIGHT_CLASS_DEVICE
 	---help---
 	  This driver adds support for access to backlight control and hotkeys