arm64/qemu: fix build error.

[wming-github]

Summary

Fix build error.
LD: nuttx
aarch64-none-elf-ld: /home/cuiziwei/vela/happy/nuttx/staging/libarch.a(arm64_initialize.o): in function up_initialize': /home/cuiziwei/vela/happy/nuttx/arch/arm64/src/common/arm64_initialize.c:208: undefined reference to arm64_netinitialize'
/home/cuiziwei/vela/happy/nuttx/arch/arm64/src/common/arm64_initialize.c:208:(.text.up_initialize+0x18): relocation truncated to fit: R_AARCH64_CALL26 against undefined symbol `arm64_netinitialize'
make[1]: *** [Makefile:166: nuttx] Error 1
make: *** [tools/Unix.mk:520: nuttx] Error 2
make: Leaving directory '/home/cuiziwei/vela/happy/nuttx'
Error: ############# build /home/cuiziwei/vela/happy/vendor/qemu/boards/vela/configs/armv8a fail ##############

Impact

Testing

[pkarashchenko]

Maybe just add

#if defined(CONFIG_NET) && !defined(CONFIG_NETDEV_LATEINIT)
void arm64_netinitialize(void)
{
  /* TODO: Support net initialize */
}
#endif

to arch/arm64/src/qemu/qemu_boot.c like other arch's under arm64? We can go with a separate file, but let's add !defined(CONFIG_NETDEV_LATEINIT) guard

[xiaoxiang781216]

Don't need since DRIVERS_VIRTIO_NET select NETDEV_LATEINIT automatically, let's close it.