LoongArch: Update Loongson-3 default config file

1, Increase NR_CPUS to 256.
2, Enable some cgroup options.
3, Enable some PREEMPT_DYNAMIC/SCHED_CORE options.
4, Enable some CMA/DMA_CMA options.
5, Enable some F2FS options.
6, Enable some DMABUF/UDMABUF options.
7, Enable some USB4 and NTB options.
8, Enable some networking options (MPTCP).
9, Enable Loongson-specific drivers: APB DMA, ASoC.
10, Enable PCI_HOST_GENERIC and SND_VIRTIO for virtual machine.
11, Remove obsolete SECURITY_SELINUX_DISABLE.
12, Regenerate the whole file to keep the order of options be the same as
   the latest source code.

Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>