drop explicit include of autoconf.h

kbuild.h forces include of autoconf.h on the
commandline using -include - so we do not need to
include the file explicit.

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Michal Marek <mmarek@suse.cz>

drivers/platform/x86/compal-laptop.c

@@ -51,7 +51,6 @@
 #include <linux/dmi.h>
 #include <linux/backlight.h>
 #include <linux/platform_device.h>
-#include <linux/autoconf.h>
 
 #define COMPAL_DRIVER_VERSION "0.2.6"