MFC r258155
ql_hw.[c,h]: set minimum thresholds on pkt size for lro path.
ql_ioctl.c: validate the length and address of buffer passed to QL_RD_FW_DUMP
MFC r258156
qls_ioctl.c: Validate the buffer and its length passed to QLA_MPI_DUMP.
             copyout dump only if qls_mpi_core_dump() is successful.
(like to credit x90c for pointing the issue)

Approved by: re (delphij)