[init] Show startup and shutdown function names in debug messages

Signed-off-by: Michael Brown <mcb30@ipxe.org>

src/interface/linux/linux_console.c

@@ -150,6 +150,7 @@ static void linux_console_shutdown(int flags __unused)
 }
 
 struct startup_fn linux_console_startup_fn __startup_fn(STARTUP_EARLY) = {
+	.name = "linux_console",
 	.startup = linux_console_startup,
 	.shutdown = linux_console_shutdown,
 };