qemu-system-riscv64 Property 'virt-machine.aclint' not found

Host environment

Operating system: NA
OS/kernel version: NA
Architecture: x86_64
QEMU flavor: qemu-system-riscv64
QEMU version: v8.1.0-rc2
QEMU command line:
```
./qemu-system-riscv64 -M virt,aclint=on
```

Emulated/Virtualized environment

Operating system: NA
OS/kernel version: NA
Architecture: riscv64

Description of problem

Steps to reproduce

run ./qemu-system-riscv64 -M virt,aclint=on
command output:

qemu-system-riscv64: Property 'virt-machine.aclint' not found

Additional information

The aclint property is registered in the virt_machine_class_init function and depends on the condition tcg_enabled(), but the initialization of tcg_enabled() is later than the call of virt_machine_class_init. This caused the aclint property to never be registered.

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