iwlwifi: display flowhandler register when sw error or on-demand
Flowhandler handle the communication between driver and uCode, when any uCode error happen, we also like to know what is the status of the flowhandler; it can help to debug flowhandler related problem. Also adding debugfs file to dump current value of flowhandler registers. Signed-off-by: NWey-Yi Guy <wey-yi.w.guy@intel.com> Signed-off-by: NReinette Chatre <reinette.chatre@intel.com> Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>
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