When user reissues same flow director cmd with a different queue
update the existing filter to redirect flow to the new desired
queue as destination just like the other filters like 5 tuple and
generic flow.
Fixes: 2d64da097aa0 ("net/bnxt: support FDIR")
Cc: stable@dpdk.org
Signed-off-by: Somnath Kotur <somnath.kotur@broadcom.com>