x86: 64: Enable PCI MMCONFIG
Some devices can't boot since kernel 6.6 without PCI MMCONFIG.
Fixes: https://github.com/openwrt/openwrt/issues/18228
Fixes: https://forum.openwrt.org/t/openwrt-24-10-x86-64-boot-hangs-after-pci-nvme-initialization/229086
Link: https://github.com/openwrt/openwrt/pull/19256
Signed-off-by: Kazuhiro Ito <[email protected]>
Link: https://github.com/openwrt/openwrt/pull/19262
Signed-off-by: Robert Marko <[email protected]>