RX_FREE_BUFFERS and RX_LOW_WATERMARK are currently defined in four places.
Based on how files are included we only need the definition in iwl-fh.h
Signed-off-by: NReinette Chatre <reinette.chatre@intel.com>
Reported-by: NFrans Pop <elendil@planet.nl>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>