wifi: iwlwifi: trans: remove retake_ownership parameter from sw_reset

Remove the retake_ownership parameter from the sw_reset function, as it
was always set to true and is not needed by other opmodes.
Simplify the sw_reset API function.

Signed-off-by: Itamar Shalev <itamar.shalev@intel.com>
Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
Link: https://patch.msgid.link/20250709230308.0a103d021815.I2a3da6f83aa691496a53a548bd73bddd4d4d2db8@changeid