drm/audio: make drm_audio_component.h self-contained

The file uses bool and struct completion, include the relevant headers.
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20221123130932.3863985-1-jani.nikula@intel.com

include/drm/drm_audio_component.h

@@ -4,6 +4,9 @@
 #ifndef _DRM_AUDIO_COMPONENT_H_
 #define _DRM_AUDIO_COMPONENT_H_
 
+#include <linux/completion.h>
+#include <linux/types.h>
+
 struct drm_audio_component;
 struct device;