wlan: Add AP Find feature

Add changes required in HDD for find AP feature.
Add vendor command to pass "Find AP" params to firmware
so that it can wake up the host if its finds the corresponding AP.

Change-Id: I4e5ada14e21e04a5c686b04cee2003b9b39b5ec1
CRs-Fixed: 755225
diff --git a/Kbuild b/Kbuild
index bfcf34f..438335d 100644
--- a/Kbuild
+++ b/Kbuild
@@ -50,6 +50,8 @@
     CONFIG_WLAN_OFFLOAD_PACKETS := y
 
     endif
+#Flag to enable AP Find feature
+CONFIG_WLAN_FEATURE_AP_FIND := y
 
 # Flag to enable feature Software AP Authentication Offload
 SAP_AUTH_OFFLOAD := y
@@ -670,6 +672,10 @@
 CDEFINES += -DSAP_AUTH_OFFLOAD
 endif
 
+ifeq ($(CONFIG_WLAN_FEATURE_AP_FIND), y)
+CDEFINES += -DWLAN_FEATURE_APFIND
+endif
+
 CDEFINES += -DFEATURE_WLAN_CH_AVOID
 CDEFINES += -DWLAN_FEATURE_AP_HT40_24G