lxc: add missing deps

Several deps are missing based the output of lxc-checkconfig shown below
before this commit is applied.

Note-CONFIG_IP_NF_TARGET_MASQUERADE and CONFIG_IP6_NF_TARGET_MASQUERADE
are only needed for lxc-net which we do not package. A separate PR should
be created to patch it out.

% lxc-checkconfig | grep missing
Cgroup device: missing
CONFIG_IP_NF_TARGET_MASQUERADE: missing
CONFIG_IP6_NF_TARGET_MASQUERADE: missing
CONFIG_NETFILTER_XT_TARGET_CHECKSUM: missing
FUSE (for use with lxcfs): missing
checkpoint restore: missing
CONFIG_UNIX_DIAG: missing
CONFIG_INET_DIAG: missing
CONFIG_PACKET_DIAG: missing
CONFIG_NETLINK_DIAG: missing

Note - this PR is dependent on openwrt/openwrt#17553

Signed-off-by: John Audia <therealgraysky@proton.me>

utils/lxc/Config.in

@@ -4,10 +4,13 @@ menu "Configuration"
 config LXC_KERNEL_OPTIONS
 	bool "Enable kernel support for LXC"
 	default n
+	select KERNEL_CHECKPOINT_RESTORE
+	select KERNEL_UNIX_DIAG
 	select KERNEL_CGROUPS
 	select KERNEL_NAMESPACES
 	select KERNEL_DEVPTS_MULTIPLE_INSTANCES
 	select KERNEL_POSIX_MQUEUE
+	select KERNEL_CGROUP_DEVICE
 	select KERNEL_CGROUP_SCHED
 	select KERNEL_FAIR_GROUP_SCHED
 	select KERNEL_RT_GROUP_SCHED
@@ -50,6 +53,10 @@ config LXC_NETWORKING
 	default n
 	select PACKAGE_kmod-veth
 	select PACKAGE_kmod-macvlan
+	select PACKAGE_kmod-inet-diag
+	select PACKAGE_kmod-ipt-checksum
+	select KERNEL_NETLINK_DIAG
+	select KERNEL_PACKET_DIAG
 	help
 	  Enable "veth pair device" and "macvlan"