wlan: Set RoamRssiDiff=0 to disable roam hysteresis.

Roam hysteresis setting is to be included in a future build.  For now,
Set RoamRssiDiff=0 to disable it.

Change-Id: I5eac5797187cdc283a317b60ea0c2f698b9d87c8
CR-Fixed: 405567
diff --git a/firmware_bin/WCNSS_qcom_cfg.ini b/firmware_bin/WCNSS_qcom_cfg.ini
index 298d229..1572b2a 100644
--- a/firmware_bin/WCNSS_qcom_cfg.ini
+++ b/firmware_bin/WCNSS_qcom_cfg.ini
@@ -175,7 +175,7 @@
 #Check if the AP to which we are roaming is better than current AP in terms of RSSI.
 #Checking is disabled if set to Zero.Otherwise it will use this value as to how better 
 #the RSSI of the new/roamable AP should be for roaming
-RoamRssiDiff=5
+RoamRssiDiff=0
 
 # SAP Country code