wlan: Enqueue preauth in sme command queue.

Serial the preauth on the SME command queue. This maintains SMEs
"contract" wth PE for "one operation at a time".

Change-Id: I05bd439198d0d70969ad065b35ed090c8d323005
CR-Fixed: 406198
diff --git a/CORE/SME/inc/csrInternal.h b/CORE/SME/inc/csrInternal.h
index 5817543..a257881 100644
--- a/CORE/SME/inc/csrInternal.h
+++ b/CORE/SME/inc/csrInternal.h
@@ -168,6 +168,7 @@
     eCsrSmeIssuedFTReassoc,
     eCsrForcedDisassocSta,
     eCsrForcedDeauthSta,
+    eCsrPerformPreauth,
     
 }eCsrRoamReason;