acpi-video-detect: Make acpi_video_get_capabilities a private function

acpi_video_get_capabilities() is only used inside video_detect.c so make
it static. While at it also remove the prototype for the non existent
acpi_video_display_switch_support function from acpi.h
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Darren Hart <dvhart@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

drivers/acpi/video_detect.c

@@ -184,7 +184,7 @@ static const struct dmi_system_id video_detect_dmi_table[] = {
  * all graphics capabilities of physically present devices are
  * summarized and returned. This is cached and done only once.
  */
-long acpi_video_get_capabilities(acpi_handle graphics_handle)
+static long acpi_video_get_capabilities(acpi_handle graphics_handle)
 {
 	long caps = 0;
 	struct acpi_device *tmp_dev;
@@ -227,7 +227,6 @@ long acpi_video_get_capabilities(acpi_handle graphics_handle)
 			  graphics_handle ? acpi_device_bid(tmp_dev) : ""));
 	return caps;
 }
-EXPORT_SYMBOL(acpi_video_get_capabilities);
 
 static void acpi_video_caps_check(void)
 {

include/linux/acpi.h

@@ -245,19 +245,12 @@ extern bool wmi_has_guid(const char *guid);
 
 #if defined(CONFIG_ACPI_VIDEO) || defined(CONFIG_ACPI_VIDEO_MODULE)
 
-extern long acpi_video_get_capabilities(acpi_handle graphics_dev_handle);
 extern long acpi_is_video_device(acpi_handle handle);
 extern void acpi_video_dmi_promote_vendor(void);
 extern int acpi_video_backlight_support(void);
-extern int acpi_video_display_switch_support(void);
 
 #else
 
-static inline long acpi_video_get_capabilities(acpi_handle graphics_dev_handle)
-{
-	return 0;
-}
-
 static inline long acpi_is_video_device(acpi_handle handle)
 {
 	return 0;
@@ -272,11 +265,6 @@ static inline int acpi_video_backlight_support(void)
 	return 0;
 }
 
-static inline int acpi_video_display_switch_support(void)
-{
-	return 0;
-}
-
 #endif /* defined(CONFIG_ACPI_VIDEO) || defined(CONFIG_ACPI_VIDEO_MODULE) */
 
 extern int acpi_blacklisted(void);