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

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

src/arch/x86/image/initrd.c

@@ -300,5 +300,6 @@ static void initrd_startup ( void ) {
 
 /** initrd startup function */
 struct startup_fn startup_initrd __startup_fn ( STARTUP_LATE ) = {
+	.name = "initrd",
 	.startup = initrd_startup,
 };