qcacmn: Add FL macro definition in QDF layer

FL macro definition is used in converged layer, move
FL macro definition from umac layer to common QDF layer.

Change-Id: Id3c4383c385eb3d6391c4c066b0034fb2f053cdc
CRs-Fixed: 1008835

qdf/inc/qdf_trace.h

@@ -43,6 +43,8 @@
 
 /* Type declarations */
 
+#define FL(x)    "%s: %d: " x, __func__, __LINE__
+
 /**
  * typedef enum QDF_TRACE_LEVEL - Debug Trace level
  * @QDF_TRACE_LEVEL_NONE: no trace will be logged. This value is in place