Correct comment and remove a lost asterisk

Author: htibosch

source/portable/NetworkInterface/Zynq/x_emacpsif.h

@@ -60,7 +60,6 @@
 
     extern XEmacPs_Config mac_configs[ XPAR_XEMACPS_NUM_INSTANCES ];
 
-    *
     void xemacpsif_setmac( uint32_t index,
                            uint8_t * addr );
     uint8_t * xemacpsif_getmac( uint32_t index );

source/portable/NetworkInterface/Zynq/x_emacpsif_dma.c

@@ -222,7 +222,7 @@ void emacps_send_handler( void * arg )
      */
     xemacpsif->isr_events |= EMAC_IF_TX_EVENT;
 
-    /* Take the mutex without blocking. */
+    /* Give to the mutex so that a new packet can be sent from emacps_send_message(). */
     xSemaphoreGiveFromISR( xemacpsif->txMutex, &xHigherPriorityTaskWoken );
 
     if( xEMACTaskHandles[ xEMACIndex ] != NULL )