vc4_hdmi: Remove VC4_HDMI_SCHEDULER_CONTROL_VERT_ALWAYS_KEEPOUT

This bit ensures data island packets are never generated when disallowed by HDCP.
As no Pi boards support HDCP this is providing an unnecessary restriction

Signed-off-by: Dom Cobley <popcornmix@gmail.com>

Author: popcornmix

drivers/gpu/drm/vc4/vc4_hdmi.c

@@ -1550,9 +1550,6 @@ static void vc4_hdmi_encoder_post_crtc_enable(struct drm_encoder *encoder,
 
 		WARN_ON(!(HDMI_READ(HDMI_SCHEDULER_CONTROL) &
 			  VC4_HDMI_SCHEDULER_CONTROL_HDMI_ACTIVE));
-		HDMI_WRITE(HDMI_SCHEDULER_CONTROL,
-			   HDMI_READ(HDMI_SCHEDULER_CONTROL) |
-			   VC4_HDMI_SCHEDULER_CONTROL_VERT_ALWAYS_KEEPOUT);
 
 		HDMI_WRITE(HDMI_RAM_PACKET_CONFIG,
 			   VC4_HDMI_RAM_PACKET_ENABLE);