qemu-config: restore "machine" in qmp_query_command_line_options()

qemu-config: restore "machine" in qmp_query_command_line_options()

Commit d8fb7d0969d5c32b3d1b9e20b63ec6c0abe80be4 ("vl: switch -M parsing
to keyval") stopped adding the "machine" QemuOptsList. This causes
"machine" options to not show up in QMP query-command-line-options
output. For example, libvirt cannot detect that kernel_irqchip support
is available.

Adjust the "machine" opts enumeration in
qmp_query_command_line_options() so that options are properly reported.

Fixes: d8fb7d0969d5 ("vl: switch -M parsing to keyval")
Cc: Paolo Bonzini <[email protected]>
Signed-off-by: Stefan Hajnoczi <[email protected]>
Message-Id: <20210721151055[email protected]>
Signed-off-by: Paolo Bonzini <[email protected]>