Add kmod-drm-i915 to the default packages. It was build into the kernel
before and is now build as a kernel module.
Fixes: 77cfe8fd15d3 ("x86: make i915 as a kmod with required firmware")
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
Link: https://github.com/openwrt/openwrt/pull/17781
Signed-off-by: Robert Marko <robimarko@gmail.com>