qcacmn: Address compilation issues for WIN new fw headers

Address compilation issues for WIN with new Lithium Firmware headers.
Also removed dependency on htt.h from header files, which may need to
add explicit dependency on htt.h in .c files.

Change-Id: Ia5027963837e645bc3f81a3db98c2ea06789aea8
CRs-Fixed: 1061096

wmi/src/wmi_unified_non_tlv.c

@@ -29,6 +29,7 @@
 #include "osapi_linux.h"
 #include "a_types.h"
 #include "a_debug.h"
+#include "wlan_defs.h"
 #include "ol_if_athvar.h"
 #include "ol_defines.h"
 #include "wmi_unified_api.h"