LU-14460 lnet: fix mismatched printf format

LU-14460 lnet: fix mismatched printf format

Original "%llx" does not work on all platforms. Fix it.

Lustre-change: https://review.whamcloud.com/41755
Lustre-commit: 58e05ff5af3d1fcd7b059dc56955a5f8d94db4ab

Signed-off-by: Lei Feng <flei@whamcloud.com>
Change-Id: I2edecbf66ccb2141c72294d324ade79574f5c084
Test-Parameters: trivial fortestonly
Signed-off-by: Gian-Carlo DeFazio <defazio1@llnl.gov>
Reviewed-on: https://review.whamcloud.com/44162
Tested-by: jenkins <devops@whamcloud.com>
Tested-by: Maloo <maloo@whamcloud.com>
Reviewed-by: Oleg Drokin <green@whamcloud.com>