backlight: l4f00242t03: Constify lcd_ops

'struct lcd_ops' is not modified by core backlight code, so it can be
made const for increased code safety.
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Reviewed-by: Daniel Thompson <daniel.thompson@linaro.org>
Link: https://lore.kernel.org/r/20240424-video-backlight-lcd-ops-v2-8-1aaa82b07bc6@kernel.orgSigned-off-by: Lee Jones <lee@kernel.org>

drivers/video/backlight/l4f00242t03.c

@@ -158,7 +158,7 @@ static int l4f00242t03_lcd_power_set(struct lcd_device *ld, int power)
 	return 0;
 }
 
-static struct lcd_ops l4f_ops = {
+static const struct lcd_ops l4f_ops = {
 	.set_power	= l4f00242t03_lcd_power_set,
 	.get_power	= l4f00242t03_lcd_power_get,
 };