ACPI: property: Silence missing-declarations warning in apple.c

Silence an annoying message emitted for W=1 builds:

drivers/acpi/x86/apple.c:30:6: warning: no previous declaration for 'acpi_extract_apple_properties' [-Wmissing-declarations]

Reported-by: kernel test robot <[email protected]>
Signed-off-by: Lukas Wunner <[email protected]>
Reviewed-by: Andy Shevchenko <[email protected]>
Signed-off-by: Rafael J. Wysocki <[email protected]>

Author: l1k

drivers/acpi/x86/apple.c

@@ -8,6 +8,7 @@
 #include <linux/bitmap.h>
 #include <linux/platform_data/x86/apple.h>
 #include <linux/uuid.h>
+#include "../internal.h"
 
 /* Apple _DSM device properties GUID */
 static const guid_t apple_prp_guid =