kernel: modules: video: drm: remove DRM_EXEC and DRM_SUBALLOC_HELPER

As part of adding kernel 6.6 support, DRM_EXEC and DRM_SUBALLOC_HELPER were
added to the kmod-drm, however these are only used by drm-amdgpu and
drm-radeon which are only supported on x86.

So, lets start fixing building of other targets by removing these from the
main kmod-drm, in follow-up commits they will be packaged separately and
selected when required.

Fixes: 5b08b5600720 ("kernel: modules: video: adapt for kernel 6.6")
Signed-off-by: Robert Marko <[email protected]>

package/kernel/linux/modules/video.mk

@@ -246,15 +246,11 @@ define KernelPackage/drm
   HIDDEN:=1
   DEPENDS:=+kmod-dma-buf +kmod-i2c-core +PACKAGE_kmod-backlight:kmod-backlight \
 	+kmod-fb
-  KCONFIG:=CONFIG_DRM \
-	[email protected] \
-	[email protected]
+  KCONFIG:=CONFIG_DRM
   FILES:= \
 	$(LINUX_DIR)/drivers/gpu/drm/drm.ko \
-	$(LINUX_DIR)/drivers/gpu/drm/drm_panel_orientation_quirks.ko \
-	$(LINUX_DIR)/drivers/gpu/drm/[email protected] \
-	$(LINUX_DIR)/drivers/gpu/drm/[email protected]
-  AUTOLOAD:=$(call AutoLoad,05,[email protected] [email protected] drm)
+	$(LINUX_DIR)/drivers/gpu/drm/drm_panel_orientation_quirks.ko
+  AUTOLOAD:=$(call AutoLoad,05,drm)
 endef
 
 define KernelPackage/drm/description