sif: Fix regressions in supporting fw from release 0.1.0.4 and earlier

sif: Fix regressions in supporting fw from release 0.1.0.4 and earlier

Orabug: 23497496

This commit fixes two separate regressions in handling the old fw:

1) Teardown of the dne_qp happens only with older FWs because the newer
   firmwares implements the dne_qp handling in fw, so
   driver does not invoke the teardown code. This teardown code
   uses generic calls that has been implicitly amended
   to by the WA for Bug #4074, which also assumed that all QPs
   subject to that call has a valid send queue. The DNE QPs don't
   and this causes a null pointer exception, which is triggered
   both during driver unload and as a side effect of lid changes.
2) EPSC support for SL to TSL mapping was introduced in EPSC API v.0.56
   but was broken - this causes the driver to set wrong values
   which leads to modify_qp errors. The fix is just to avoid putting
   the map to use unless epsc version is >= 0.57.

Signed-off-by: Knut Omang <knut.omang@oracle.com>