irdma(4): Upgrade driver to 1.1.5-k

This is to upgrade current irdma driver version (in support of RDMA on
Intel(R) Ethernet Controller E810) to 1.1.5-k

change summary:

• refactor defines for hardware registers
• rereg_mr verb added in libirdma
• fix print warning during compilation
• rt_ros2priority macro fix
• irdma.4 validated with mandoc
• fixing nd6_resolve usage
• added libirdma_query_device
• sysctl for irdma version
• aeq_alloc_db fix
• dwork_flush protected with qp refcount
• PFC fixes

Signed-off-by: Eric Joyner <erj@FreeBSD.org>

Reviewed by: erj@
Relnotes: yes
Sponsored by: Intel Corporation
Differential Revision: https://reviews.freebsd.org/D36944

(cherry picked from commit 777e472cd86b9394d07bf96c19dbafc2e1ff4fdc)