wlan: Add support to double dwell time based on channel count

Double scan channel dwell time if the number of channels to scan
are less than preconfigured value. This will enable framework
to use selective scan in case of saved profiles during wlan
initialization.

Change-Id: I98ba44cb2b6746d7645da3c406e21b6cbcaaab49
CRs-Fixed: 956989
diff --git a/CORE/SME/inc/csrApi.h b/CORE/SME/inc/csrApi.h
index c5cd2d1..e802f26 100644
--- a/CORE/SME/inc/csrApi.h
+++ b/CORE/SME/inc/csrApi.h
@@ -1195,6 +1195,7 @@
     tANI_BOOLEAN ignorePeerHTopMode;
     tANI_BOOLEAN disableP2PMacSpoofing;
     tANI_BOOLEAN enableFatalEvent;
+    tANI_U8 max_chan_for_dwell_time_cfg;
 }tCsrConfigParam;
 
 //Tush