LU-17507 build: Allow symlink in mofed default path

LU-17507 build: Allow symlink in mofed default path

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

Explicitly pass -H to find to allow the command line
arguments to find be symlinks.

Test-Parameters: trivial
Fixes: 3c66185c84 ("LU-17398 build: detect mlnx-ofa_kernel-devel contents")
Signed-off-by: Shaun Tancheff <shaun.tancheff@hpe.com>
Change-Id: I5d54f9b0a70db52c4be6a9a6ccaed2c59185098b
Reviewed-on: https://review.whamcloud.com/c/fs/lustre-release/+/53934
Tested-by: Shuichi Ihara <sihara@ddn.com>
Tested-by: jenkins <devops@whamcloud.com>
Tested-by: Maloo <maloo@whamcloud.com>
Reviewed-by: Jian Yu <yujian@whamcloud.com>
Reviewed-by: Petros Koutoupis <petros.koutoupis@hpe.com>
Reviewed-by: Oleg Drokin <green@whamcloud.com>