drm/mediatek: mtk_hdmi: Remove unused members of struct mtk_hdmi

The hdmi_colorspace csp member of struct mtk_hdmi is initialized
once but then it's never used at all.
Remove said member and the only assignment to it as a cleanup.

Also remove the ibias, ibias_up, min_clock, max_clock, min_hdisplay
and max_vdisplay members, as those were really completely unused.

This commit brings no functional changes.

Reviewed-by: CK Hu <[email protected]>
Signed-off-by: AngeloGioacchino Del Regno <[email protected]>
Link: https://patchwork.kernel.org/project/linux-mediatek/patch/[email protected]/
Signed-off-by: Chun-Kuang Hu <[email protected]>

Author: AngeloGioacchino Del Regno

drivers/gpu/drm/mediatek/mtk_hdmi.c

@@ -163,16 +163,9 @@ struct mtk_hdmi {
 	struct clk *clk[MTK_HDMI_CLK_COUNT];
 	struct drm_display_mode mode;
 	bool dvi_mode;
-	u32 min_clock;
-	u32 max_clock;
-	u32 max_hdisplay;
-	u32 max_vdisplay;
-	u32 ibias;
-	u32 ibias_up;
 	struct regmap *sys_regmap;
 	unsigned int sys_offset;
 	void __iomem *regs;
-	enum hdmi_colorspace csp;
 	struct platform_device *audio_pdev;
 	struct hdmi_audio_param aud_param;
 	bool audio_enable;
@@ -1072,7 +1065,6 @@ static int mtk_hdmi_output_init(struct mtk_hdmi *hdmi)
 {
 	struct hdmi_audio_param *aud_param = &hdmi->aud_param;
 
-	hdmi->csp = HDMI_COLORSPACE_RGB;
 	aud_param->aud_codec = HDMI_AUDIO_CODING_TYPE_PCM;
 	aud_param->aud_sample_size = HDMI_AUDIO_SAMPLE_SIZE_16;
 	aud_param->aud_input_type = HDMI_AUD_INPUT_I2S;