OK, I've checked them and apparently in commit 58725209d970c98489a4ee5cdf085a80347c5d47, in linux-rockchip64-default.config, CONFIG_DVB_USB_DIB0700=m was removed for reasons I haven't investigated yet (although it seems it's coming from a sync with ayufan's branch) , hence the kernel module went out of the package.
It will take some time on my side to submit a proper pull request, as I am not particularly fluent in rebuilding the kernel, nor in managing Git contributions.