hecubafb: use fb_sys_read()

Since hecubafb's framebuffer is vmalloc'ed, use fb_sys_read().
Signed-off-by: Antonino Daplas <adaplas@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

drivers/video/Kconfig

@@ -611,6 +611,7 @@ config FB_HECUBA
        select FB_SYS_FILLRECT
        select FB_SYS_COPYAREA
        select FB_SYS_IMAGEBLIT
+       select FB_SYS_FOPS
        select FB_DEFERRED_IO
        help
          This enables support for the Hecuba board. This driver was tested

drivers/video/hecubafb.c

@@ -309,6 +309,7 @@ static ssize_t hecubafb_write(struct fb_info *info, const char __user *buf,
 
 static struct fb_ops hecubafb_ops = {
 	.owner		= THIS_MODULE,
+	.fb_read        = fb_sys_read,
 	.fb_write	= hecubafb_write,
 	.fb_fillrect	= hecubafb_fillrect,
 	.fb_copyarea	= hecubafb_copyarea,