fbdev/kyro: Use fbdev I/O helpers

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/20230803184034.6456-22-tzimmermann@suse.de

drivers/video/fbdev/Kconfig

@@ -1306,9 +1306,7 @@ config FB_NEOMAGIC
 config FB_KYRO
 	tristate "IMG Kyro support"
 	depends on FB && PCI
-	select FB_CFB_FILLRECT
-	select FB_CFB_COPYAREA
-	select FB_CFB_IMAGEBLIT
+	select FB_IOMEM_HELPERS
 	select VIDEO_NOMODESET
 	help
 	  Say Y here if you have a STG4000 / Kyro / PowerVR 3 based

drivers/video/fbdev/kyro/fbdev.c

@@ -661,13 +661,11 @@ static struct pci_driver kyrofb_pci_driver = {
 
 static const struct fb_ops kyrofb_ops = {
 	.owner		= THIS_MODULE,
+	FB_DEFAULT_IOMEM_OPS,
 	.fb_check_var	= kyrofb_check_var,
 	.fb_set_par	= kyrofb_set_par,
 	.fb_setcolreg	= kyrofb_setcolreg,
 	.fb_ioctl	= kyrofb_ioctl,
-	.fb_fillrect	= cfb_fillrect,
-	.fb_copyarea	= cfb_copyarea,
-	.fb_imageblit	= cfb_imageblit,
 };
 
 static int kyrofb_probe(struct pci_dev *pdev, const struct pci_device_id *ent)