wlan: Fix Mtrace logs in HDD.

Currently during driver init, 1st hdd_trace_init
is called which sets the vos table for hdd module.
Latter on as a part of vos_preOpen, all vos table
are set to NULL. Now since for HDD module, vosTable
is not set, Mtrace logs are not getting captured.
As a part of fix, make sure vos table for HDD module
is set after vos_preOpen.

Change-Id: I61861e55e40626e58be64d2230649514a0ea2a2c
CRs-Fixed: 848426
diff --git a/CORE/HDD/src/wlan_hdd_main.c b/CORE/HDD/src/wlan_hdd_main.c
index 50ebcb0..7bd1b19 100755
--- a/CORE/HDD/src/wlan_hdd_main.c
+++ b/CORE/HDD/src/wlan_hdd_main.c
@@ -10231,7 +10231,6 @@
    wake_lock_init(&wlan_wake_lock, WAKE_LOCK_SUSPEND, "wlan");
 #endif
 
-   hddTraceInit();
    pr_info("%s: loading driver v%s\n", WLAN_MODULE_NAME,
            QWLAN_VERSIONSTR TIMER_MANAGER_STR MEMORY_DEBUG_STR);
 
@@ -10297,6 +10296,7 @@
          break;
    }
 
+   hddTraceInit();
 #ifndef MODULE
       /* For statically linked driver, call hdd_set_conparam to update curr_con_mode
        */