backlight: jornada720_lcd: Include <linux/io.h> for IOMEM() macro

Avoids the proxy include via <linux/fb.h>.

Signed-off-by: Thomas Zimmermann <[e-mail]>
Reviewed-by: Daniel Thompson <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Lee Jones <[e-mail]>

drivers/video/backlight/jornada720_lcd.c

···
 
 #include <linux/device.h>
 #include <linux/fb.h>
+#include <linux/io.h>
 #include <linux/kernel.h>
 #include <linux/lcd.h>
 #include <linux/module.h>