backlight: omap1: Remove unused struct omap_backlight_config.set_power

The callback set_power in struct omap_backlight_config is not
implemented anywhere. Remove it from the structure and driver.
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Sam Ravnborg <sam@ravnborg.org>
Reviewed-by: Daniel Thompson <daniel.thompson@linaro.org>
Reviewed-by: Dan Carpenter <dan.carpenter@linaro.org>
Link: https://lore.kernel.org/r/20240319093915.31778-3-tzimmermann@suse.deSigned-off-by: Lee Jones <lee@kernel.org>

drivers/video/backlight/omap1_bl.c

@@ -39,9 +39,6 @@ static inline void omapbl_send_enable(int enable)
 
 static void omapbl_blank(struct omap_backlight *bl, int mode)
 {
-	if (bl->pdata->set_power)
-		bl->pdata->set_power(bl->dev, mode);
-
 	switch (mode) {
 	case FB_BLANK_NORMAL:
 	case FB_BLANK_VSYNC_SUSPEND:

include/linux/platform_data/omap1_bl.h

@@ -6,7 +6,6 @@
 
 struct omap_backlight_config {
 	int default_intensity;
-	int (*set_power)(struct device *dev, int state);
 };
 
 #endif