wlan: Add log to print channel number and frequency

Add error log to print channel number and frequency in
wlan_hdd_cfg80211_inform_bss_frame() if it fails to retrieve the
channel.

CRs-Fixed: 1010559
Change-Id: I8fe77db17ffa40ea07206a3701c02f02564ea8fd
diff --git a/CORE/HDD/src/wlan_hdd_cfg80211.c b/CORE/HDD/src/wlan_hdd_cfg80211.c
index 69cdb69..aff7312 100644
--- a/CORE/HDD/src/wlan_hdd_cfg80211.c
+++ b/CORE/HDD/src/wlan_hdd_cfg80211.c
@@ -12202,7 +12202,9 @@
      */
     if(chan == NULL)
     {
-       hddLog(VOS_TRACE_LEVEL_ERROR, "%s chan pointer is NULL", __func__);
+       hddLog(VOS_TRACE_LEVEL_ERROR,
+           FL("chan pointer is NULL, chan_no: %d freq: %d"),
+           chan_no, freq);
        kfree(mgmt);
        return NULL;
     }