add gpio led uart

hc

2024-05-10 748e4f3d702def1a4bff191e0cf93b6a05340f01

 kernel/arch/powerpc/kernel/.gitignore
..
..
@@ -1 +1,3 @@
1
+# SPDX-License-Identifier: GPL-2.0-only
2
+prom_init_check
1
3
 vmlinux.lds