pfSense-pkg-softflowd: Add additional options available in softflowd-1.0.0
DEPENDS on FreeBSD ports issue https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=242960
softflowd added support for MAC addresses in
reported flows in version 0.9.9 and additional support
for timestamping flows in earlier versions that wasn't
supported in the pfSense GUI. Lack of timestamp setting
support in the GUI meant that flow start/end timestamps
weren't being reported.