wifi: iwlmei: don't send SAP messages if AMT is disabled

SAP messages should not be sent when AMT is disabled.

Signed-off-by: Avraham Stern <avraham.stern@intel.com>
Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
Link: https://lore.kernel.org/r/20230822103048.db16b55c27c1.I48834c14f5af8d31792f5048b3023509cba191dd@changeid


Signed-off-by: Johannes Berg <johannes.berg@intel.com>