iwlwifi: separate set_hw_params function for 6000 series

Separate set_hw_params() function for 6000
series from 5000/1000 series because:
    1) 6000 series use different set of sensitivity range table
    2) 6000 series has different uCode image size

Also include the new sensitivity parameters needed by sensitivity
algorithm.

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/iwlwifi/iwl-calib.c b/drivers/net/wireless/iwlwifi/iwl-calib.c
index c4b565a..6e73317 100644
--- a/drivers/net/wireless/iwlwifi/iwl-calib.c
+++ b/drivers/net/wireless/iwlwifi/iwl-calib.c
@@ -516,7 +516,7 @@
 	for (i = 0; i < NRG_NUM_PREV_STAT_L; i++)
 		data->nrg_silence_rssi[i] = 0;
 
-	data->auto_corr_ofdm = 90;
+	data->auto_corr_ofdm =  ranges->auto_corr_min_ofdm;
 	data->auto_corr_ofdm_mrc = ranges->auto_corr_min_ofdm_mrc;
 	data->auto_corr_ofdm_x1  = ranges->auto_corr_min_ofdm_x1;
 	data->auto_corr_ofdm_mrc_x1 = ranges->auto_corr_min_ofdm_mrc_x1;