jtag: fix handling of 'tap enable' error

if a tap could not be _enabled_, the error message was
'failed to disable tap'. Fixed that. Also, display the failing
tap's name.

Signed-off-by: Thomas Koeller <thomas.koeller@baslerweb.com>

src/jtag/tcl.c

@@ -768,10 +768,10 @@ static int jim_jtag_tap_enabler(Jim_Interp *interp, int argc, Jim_Obj *const *ar
 		// do nothing, just return the value
 	} else if (strcasecmp(cmd_name, "tapenable") == 0) {
 		if (!jtag_tap_enable(t))
-			LOG_WARNING("failed to disable tap");
+			LOG_WARNING("failed to enable tap %s", t->dotted_name);
 	} else if (strcasecmp(cmd_name, "tapdisable") == 0) {
 		if (!jtag_tap_disable(t))
-			LOG_WARNING("failed to disable tap");
+			LOG_WARNING("failed to disable tap %s", t->dotted_name);
 	} else {
 		LOG_ERROR("command '%s' unknown", cmd_name);
 		return JIM_ERR;