drm/client: include types.h to make drm_client_event.h self-contained

drm_client_event.h uses bool without types.h, include it.

Fixes: bf17766f ("drm/client: Move suspend/resume into DRM client callbacks")
Cc: Thomas Zimmermann <tzimmermann@suse.de>
Acked-by: Simona Vetter <simona.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/6c69cb005cc3a2b968b6c9675d0ba03173f6c574.1737556766.git.jani.nikula@intel.com


Signed-off-by: Jani Nikula <jani.nikula@intel.com>