MOFED find should use -H in cases where /usr/src/ofa_kernel/default is a symlink

A default installation is for /usr/src/ofa_kernel/default to be a symlink, it is also the default place to expect the MOFED kernel development headers.

When 'find' defaults to never follow symlinks the build breaks due to the expected MOFED headers not being found when find is searching for the ofed_scripts sub directory.

At a minimum find needs to use -H to ensure the symlinks specified on the command line are followed.