[DPDK/ethdev Bug 2043] ml/cnxk mvtvm: max_nb_qpairs parsed four bytes wide

https://bugs.dpdk.org/show_bug.cgi?id=2043

            Bug ID: 2043
           Summary: ml/cnxk mvtvm: max_nb_qpairs parsed four bytes wide
           Product: DPDK
           Version: 26.11
          Hardware: All
                OS: All
            Status: UNCONFIRMED
          Severity: normal
          Priority: Normal
         Component: ethdev
          Assignee: dev@dpdk.org
          Reporter: stephen@networkplumber.org
  Target Milestone: ---

drivers/ml/cnxk/mvtvm_ml_dev.c

parse_uint_arg() stores a uint32_t:

        *((uint32_t *)extra_args) = i;

but max_nb_qpairs is a uint16_t followed by an int in the same struct, so
parsing that argument writes past the field into its neighbour.

Fixes: 48c6081ab4b3 ("ml/cnxk: enable creation of MVTVM virtual device")

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