drm/sun4i: Remove unnecessary include statements for drm_crtc_helper.h

Several source files include drm_crtc_helper.h without needing it or
only to get its transitive include statements; leading to unnecessary
compile-time dependencies.

Directly include required headers and drop drm_crtc_helper.h where
possible.

v2:
	* keep includes sorted (Sam)
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Sam Ravnborg <sam@ravnborg.org>
Acked-by: Jani Nikula <jani.nikula@intel.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230116131235.18917-19-tzimmermann@suse.de

drivers/gpu/drm/sun4i/sun8i_dw_hdmi.c

@@ -8,7 +8,7 @@
 #include <linux/of_device.h>
 #include <linux/platform_device.h>
 
-#include <drm/drm_crtc_helper.h>
+#include <drm/drm_modeset_helper_vtables.h>
 #include <drm/drm_of.h>
 #include <drm/drm_simple_kms_helper.h>