Add mm-ctl to .gitignore
Add mm-ctl to .gitignore

This patch adds a new entry, "mm-ctl", to .gitignore not to accidentally
add the compiled binary.

Signed-off-by: Taku Fukushima <48ddf7139da17a0278f1f27e611ac6b9304f94b2@midokura.com>

tfukushima/mm-ctl