I've tested that bhyve now correctly sets the ram configuration variable
when parsing legacy options:
```
# usr.sbin/bhyve/bhyve -o config.dump=1 -s 7,nvme,ram=16384 xx
pci.0.7.0.device=nvme
pci.0.7.0.ram=16384
# usr.sbin/bhyve/bhyve -o config.dump=1 -s 7,nvme,/dev/gpt/rootfs xx
pci.0.7.0.device=nvme
pci.0.7.0.path=/dev/gpt/rootfs
```
and with some other options, for completeness:
```
# usr.sbin/bhyve/bhyve -o config.dump=1 -s 7,nvme,ram=1234,direct,ro,sectorsize=512/512 xx
pci.0.7.0.device=nvme
pci.0.7.0.direct=true
pci.0.7.0.ro=true
pci.0.7.0.sectorsize=512/512
pci.0.7.0.ram=1234
```