drm/vc4: hdmi: Set VC4_HDMI_MAI_CONFIG_FORMAT_REVERSE

Without this bit set, HDMI_MAI_FORMAT doesn't pick up
the format and samplerate from DVP_CFG_MAI0_FMT and you
can't get HDMI_HDMI_13_AUDIO_STATUS_1 to indicate HBR mode
Signed-off-by: NDom Cobley <popcornmix@gmail.com>
Signed-off-by: NMaxime Ripard <maxime@cerno.tech>
Reviewed-by: NNicolas Saenz Julienne <nsaenz@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20210525132354.297468-9-maxime@cerno.tech

drivers/gpu/drm/vc4/vc4_hdmi.c

@@ -1399,6 +1399,7 @@ static int vc4_hdmi_audio_hw_params(struct snd_pcm_substream *substream,
 
 	HDMI_WRITE(HDMI_MAI_CONFIG,
 		   VC4_HDMI_MAI_CONFIG_BIT_REVERSE |
+		   VC4_HDMI_MAI_CONFIG_FORMAT_REVERSE |
 		   VC4_SET_FIELD(channel_mask, VC4_HDMI_MAI_CHANNEL_MASK));
 
 	channel_map = vc4_hdmi->variant->channel_map(vc4_hdmi, channel_mask);