prima: Change HDD context verification log level to info

If the driver unload happens while calling extscan callback,
repeated driver logs happen while verifying for the HDD context.
So, change the log level to info from error inorder to avoid the
excessive logs.

Change-Id: I22e042a17e4b3471e60658a67a4c9b14eeb2e436
CRs-Fixed: 735683
diff --git a/CORE/HDD/src/wlan_hdd_cfg80211.c b/CORE/HDD/src/wlan_hdd_cfg80211.c
index 5e3be45..e2cc788 100644
--- a/CORE/HDD/src/wlan_hdd_cfg80211.c
+++ b/CORE/HDD/src/wlan_hdd_cfg80211.c
@@ -2930,7 +2930,7 @@
     hdd_context_t *pHddCtx = (hdd_context_t *)ctx;
 
     if (wlan_hdd_validate_context(pHddCtx)) {
-        hddLog(VOS_TRACE_LEVEL_ERROR, FL("HDD context is not valid"));
+        hddLog(VOS_TRACE_LEVEL_INFO, FL("HDD context is not valid"));
         return;
     }