Mellanox: Install pre-build driver

VERSION=5.7-1.0.2.0
URL=http://www.mellanox.com/downloads/ofed/MLNX_EN-${VERSION}/mlnx-en-${VERSION}-ubuntu$(lsb_release -rs)-$(uname -p).tgz
 
wget ${URL} -q -O /tmp/${URL##*/}
tar -C /tmp -xzf /tmp/mlnx-en-*-ubuntu*.tgz
cd /tmp/mlnx-en-${VERSION}-ubuntu*/
 
# prebuild driver only
./install --add-kernel-support-build-only
 
# install
./install --force
 
# show packages
ll /tmp/mlnx-en-*-generic/mlnx-en-*-ext.tgz