Patched support more than 3 GB memory
Patched support more than 3 GB memory

- https://github.com/mist64/xhyve/commit/793d17ccffa9a1f74f6f1a4997e73cb2e1496296

Signed-off-by: Koichi Shiraishi <2e5bdfebde234ed3509bcfc18121c70b6631e207@gmail.com>

zchee/docker-machine-driver-xhyve,zchee/docker-machine-driver-xhyve