Set struct fb_ops and with FB_DEFAULT_IOMEM_OPS, fbdev's initializer
for I/O memory. Sets the callbacks to the cfb_ and fb_io_ functions.
Select the correct modules with Kconfig's FB_IOMEM_HELPERS token.
The macro and token set the currently selected values, so there is
no functional change.
v3:
	* use _IOMEM_ in commit message
v2:
	* updated to use _IOMEM_ tokens
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Sam Ravnborg <sam@ravnborg.org>
Acked-by: Helge Deller <deller@gmx.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20230803184034.6456-39-tzimmermann@suse.de
        bool "SH7760/SH7763/SH7720/SH7721 LCDC support"
        depends on FB && (CPU_SUBTYPE_SH7760 || CPU_SUBTYPE_SH7763 \
                || CPU_SUBTYPE_SH7720 || CPU_SUBTYPE_SH7721)
-       select FB_CFB_FILLRECT
-       select FB_CFB_COPYAREA
-       select FB_CFB_IMAGEBLIT
+       select FB_IOMEM_HELPERS
        help
          Support for the SH7760/SH7763/SH7720/SH7721 integrated
          (D)STN/TFT LCD Controller.
 
 
 static const struct fb_ops sh7760fb_ops = {
        .owner = THIS_MODULE,
+       FB_DEFAULT_IOMEM_OPS,
        .fb_blank = sh7760fb_blank,
        .fb_check_var = sh7760fb_check_var,
        .fb_setcolreg = sh7760_setcolreg,
        .fb_set_par = sh7760fb_set_par,
-       .fb_fillrect = cfb_fillrect,
-       .fb_copyarea = cfb_copyarea,
-       .fb_imageblit = cfb_imageblit,
 };
 
 static void sh7760fb_free_mem(struct fb_info *info)