kernel: modules: define fb-io-fops module

Define define fb-io-fops module - Fbdev helpers for framebuffers in I/O memory
By creating a hidden module it is possible to load fb_io_fops.ko
according to the kernel version.

Fixes: 5048c9d ("kernel: modules: adjust the object files of kmod-fb ")
Package kmod-drm-radeon is missing dependencies for the following libraries:
fb_io_fops.ko
make[2]: *** [modules/video.mk:620: /__w/openwrt/openwrt/openwrt/bin/targets/x86/geode/packages/kmod-drm-radeon-6.12.28-r1.apk] Error 1
time: package/kernel/linux/compile#45.35#40.01#75.34

Signed-off-by: Mieczyslaw Nalewaj <[email protected]>
Link: https://github.com/openwrt/openwrt/pull/18771
Signed-off-by: Robert Marko <[email protected]>

package/kernel/linux/modules/video.mk

@@ -102,7 +102,7 @@ $(eval $(call KernelPackage,backlight-pwm))
 define KernelPackage/fb
   SUBMENU:=$(VIDEO_MENU)
   TITLE:=Framebuffer and framebuffer console support
-  DEPENDS:=@DISPLAY_SUPPORT
+  DEPENDS:=@DISPLAY_SUPPORT +LINUX_6_6:kmod-fb-io-fops
   KCONFIG:= \
 	CONFIG_FB \
 	CONFIG_FB_DEVICE=y \
@@ -128,8 +128,7 @@ define KernelPackage/fb
 	CONFIG_VT_CONSOLE=y \
 	CONFIG_VT_HW_CONSOLE_BINDING=y
   FILES:=$(LINUX_DIR)/drivers/video/fbdev/core/fb.ko \
-	$(LINUX_DIR)/lib/fonts/font.ko \
-	$(LINUX_DIR)/drivers/video/fbdev/core/[email protected]
+	$(LINUX_DIR)/lib/fonts/font.ko
   AUTOLOAD:=$(call AutoLoad,06,fb font)
 endef
 
@@ -193,6 +192,18 @@ endef
 $(eval $(call KernelPackage,fb-cfb-imgblt))
 
 
+define KernelPackage/fb-io-fops
+  SUBMENU:=$(VIDEO_MENU)
+  TITLE:=Fbdev helpers for framebuffers in I/O memory
+  HIDDEN:=1
+  KCONFIG:=CONFIG_FB_IOMEM_FOPS
+  FILES:=$(LINUX_DIR)/drivers/video/fbdev/core/fb_io_fops.ko
+  AUTOLOAD:=$(call AutoLoad,07,fb_io_fops)
+endef
+
+$(eval $(call KernelPackage,fb-io-fops))
+
+
 define KernelPackage/fb-sys-fops
   SUBMENU:=$(VIDEO_MENU)
   TITLE:=Framebuffer software sys ops support
@@ -638,7 +649,8 @@ define KernelPackage/drm-radeon
   TITLE:=Radeon DRM support
   DEPENDS:=@TARGET_x86 @DISPLAY_SUPPORT +kmod-backlight +kmod-drm-kms-helper \
 	+kmod-drm-ttm +kmod-drm-ttm-helper +kmod-i2c-algo-bit +radeon-firmware \
-	+kmod-drm-display-helper +kmod-acpi-video +kmod-drm-suballoc-helper
+	+kmod-drm-display-helper +kmod-acpi-video +kmod-drm-suballoc-helper \
+	+!LINUX_6_6:kmod-fb-io-fops
   KCONFIG:=CONFIG_DRM_RADEON
   FILES:=$(LINUX_DIR)/drivers/gpu/drm/radeon/radeon.ko
   AUTOLOAD:=$(call AutoProbe,radeon)