qcacmn: Clean up MAX_BCN_PROBE_IN_SCAN_QUEUE

Clean up MAX_BCN_PROBE_IN_SCAN_QUEUE and add the corresponding
macro values in umac scan ap config file

Change-Id: I34699372b948bc1e2f515048321018e85259e273
CRs-Fixed: 2497518

umac/scan/configs/ap_scan.config

@@ -8,3 +8,4 @@ EXTRA_CFLAGS += -DSCAN_MAX_SCAN_TIME=50000
 EXTRA_CFLAGS += -DSCAN_NETWORK_IDLE_TIMEOUT=200
 EXTRA_CFLAGS += -DHIDDEN_SSID_TIME=0xFFFFFFFF
 EXTRA_CFLAGS += -DSCAN_CHAN_STATS_EVENT_ENAB=1
+EXTRA_CFLAGS += -DMAX_BCN_PROBE_IN_SCAN_QUEUE=2000