Merge branch 'bnxt_en-bug-fixes'

Michael Chan says:

====================
bnxt_en: Bug fixes

This small series contains 2 fixes.  The first one fixes the PTP
initialization logic on older chips to avoid logging a warning.  The
second one fixes a potenial NULL pointer dereference in the driver's
aux bus unload path.
====================

Link: https://lore.kernel.org/r/20230417065819.122055-1-michael.chan@broadcom.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>