Flag 'abi_match' along with several other local variables has no purpose
with v4 related members removed.

Cc: Curtis Malainey <cujomalainey@chromium.org>
Cc: Łukasz Majczak <lmajczak@google.com>
Signed-off-by: Cezary Rojewski <cezary.rojewski@intel.com>
Link: https://msgid.link/r/20240403091629.647267-4-cezary.rojewski@intel.comSigned-off-by: Mark Brown <broonie@kernel.org>