Print an error message if a DMA timeout occurs.

This still needs to be improved to stop the DMA
and report the error to the caller. But at least
it's no longer failing silently.

urjtag/src/bus/ejtag_dma.c

@@ -231,6 +231,9 @@ ejtag_dma_write (urj_bus_t *bus, unsigned int addr, unsigned int data, int sz)
     }
     while (ejctrl->out->data[DstRt] == 1);      // This flag tell us the processor has completed the op
 
+    if (!timeout)
+      urj_log (URJ_LOG_LEVEL_NORMAL, "Timeout\n");
+
     urj_part_set_instruction (bus->part, "EJTAG_CONTROL");
     urj_tap_chain_shift_instructions (bus->chain);
     urj_tap_register_fill (ejctrl->in, 0);
@@ -311,6 +314,9 @@ ejtag_dma_read (urj_bus_t *bus, unsigned int addr, int sz)
     }
     while (ejctrl->out->data[DstRt] == 1);      // This flag tell us the processor has completed the op
 
+    if (!timeout)
+      urj_log (URJ_LOG_LEVEL_NORMAL, "Timeout\n");
+
     urj_part_set_instruction (bus->part, "EJTAG_DATA");
     urj_tap_chain_shift_instructions (bus->chain);
     urj_tap_register_fill (ejdata->in, 0);