wifi: iwlwifi: simplify iwl_trans_pcie_d3_resume

If iwl_trans_d3_resume succeeded but the hw requested a reset, this will
be indicated to the opmode via the iwl_d3_status parameter while the return
value will be 0.

But the opmode doesn't really care if the resume failed or if a restart
is required. It acts the same in both cases (beside different logs, but
this can be done in iwl_trans_pcie_d3_resume)

This complicates the code for no good reason.

Change the iwl_trans_pcie_d3_resume to return an error value also in the
case that everything went successfully but a restart is required,
and add more logs so we can differentiate between the cases.

This makes iwl_d3_status redundant. Remove it as well.

Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
Link: https://patch.msgid.link/20250826184046.5fa2d909c75d.Ida19d8d8d73eddf12b30f1d473ea675f415778b2@changeid

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