script: label the identify/load phases in jtag_autoinit

autoinit parses every bsdl twice for a matching part — once to read the
IDCODE, once to actually attach it — producing two identical loader
blocks with no hint why. Bracket each with an [identify] / [load] line.

modules/script/script.c

@@ -1523,6 +1523,7 @@ static int cmd_autoinit(script_ctx *ctx, char *line)
             if (!fileinfo.isdirectory)
             {
                 chip_id_mask = 0xFFFFFFFF;
+                ctx->script_printf(ctx, MSG_INFO_0, "[identify] reading IDCODE from %s :\n", fileinfo.filename);
                 chip_id = jtagcore_get_bsdl_id(jc, filename, &chip_id_mask);
                 if (chip_id)
                 {
@@ -1537,6 +1538,7 @@ static int cmd_autoinit(script_ctx *ctx, char *line)
                             }
 
                             // The BSDL ID match with the device.
+                            ctx->script_printf(ctx, MSG_INFO_0, "[load] IDCODE 0x%.8lX matches device %d, attaching %s :\n", chip_id, dev_nb, fileinfo.filename);
                             if (jtagcore_loadbsdlfile(jc, filename, dev_nb) == JTAG_CORE_NO_ERROR)
                             {
                                 entityname[0] = 0;