drm/panel-novatek-nt35950: Drop custom DSI write macro

There is a macro for this already in the <drm/drm_mipi_dsi.h> header, use
that instead and delete the custom DSI write macro defined in the driver.
Signed-off-by: Javier Martinez Canillas <javierm@redhat.com>
Reviewed-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20230107191822.3787147-7-javierm@redhat.com

drivers/gpu/drm/panel/panel-novatek-nt35950.c

@@ -89,14 +89,6 @@ static inline struct nt35950 *to_nt35950(struct drm_panel *panel)
 	return container_of(panel, struct nt35950, panel);
 }
 
-#define dsi_dcs_write_seq(dsi, seq...) do {				\
-		static const u8 d[] = { seq };				\
-		int ret;						\
-		ret = mipi_dsi_dcs_write_buffer(dsi, d, ARRAY_SIZE(d));	\
-		if (ret < 0)						\
-			return ret;					\
-	} while (0)
-
 static void nt35950_reset(struct nt35950 *nt)
 {
 	gpiod_set_value_cansleep(nt->reset_gpio, 1);
@@ -338,7 +330,7 @@ static int nt35950_on(struct nt35950 *nt)
 		return ret;
 
 	/* Unknown command */
-	dsi_dcs_write_seq(dsi, 0xd4, 0x88, 0x88);
+	mipi_dsi_dcs_write_seq(dsi, 0xd4, 0x88, 0x88);
 
 	/* CMD2 Page 7 */
 	ret = nt35950_set_cmd2_page(nt, 7);
@@ -346,10 +338,10 @@ static int nt35950_on(struct nt35950 *nt)
 		return ret;
 
 	/* Enable SubPixel Rendering */
-	dsi_dcs_write_seq(dsi, MCS_PARAM_SPR_EN, 0x01);
+	mipi_dsi_dcs_write_seq(dsi, MCS_PARAM_SPR_EN, 0x01);
 
 	/* SPR Mode: YYG Rainbow-RGB */
-	dsi_dcs_write_seq(dsi, MCS_PARAM_SPR_MODE, MCS_SPR_MODE_YYG_RAINBOW_RGB);
+	mipi_dsi_dcs_write_seq(dsi, MCS_PARAM_SPR_MODE, MCS_SPR_MODE_YYG_RAINBOW_RGB);
 
 	/* CMD3 */
 	ret = nt35950_inject_black_image(nt);