RDMA/bnxt_re: Update maintainers list

Updated the maintainers list and removed non-active members.

Link: https://lore.kernel.org/r/20210603131534.982257-3-devesh.sharma@broadcom.com


Signed-off-by: Devesh Sharma <devesh.sharma@broadcom.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>