use PSM2 dependency in libfabric only on x86_64

[SebastianAchilles]

(created using eb --new-pr)

[lexming]

@boegelbot: please test @ generoso

[boegelbot]

@lexming: Request for testing this PR well received on login1

PR test command 'EB_PR=20585 EB_ARGS= EB_CONTAINER= EB_REPO=easybuild-easyconfigs /opt/software/slurm/bin/sbatch --job-name test_PR_20585 --ntasks=4 ~/boegelbot/eb_from_pr_upload_generoso.sh' executed!

• exit code: 0
• output:

Submitted batch job 13510

Test results coming soon (I hope)...

- notification for comment with ID 2124685344 processed

Message to humans: this is just bookkeeping information for me,
it is of no use to you (unless you think I have a bug, which I don't).

[boegelbot]

Test report by @boegelbot
SUCCESS
Build succeeded for 8 out of 8 (8 easyconfigs in total)
cns1 - Linux Rocky Linux 8.9, x86_64, Intel(R) Xeon(R) CPU E5-2667 v3 @ 3.20GHz (haswell), Python 3.6.8
See https://gist.github.com/boegelbot/592b6b7c7d3cd7e1db399fe3e2a7de2f for a full test report.

[lexming]

LGTM

[lexming]

Meging, thanks @SebastianAchilles !