SPDX: Fixup tags from latest EFI PR

Signed-off-by: Tom Rini <trini@konsulko.com>

arch/sandbox/include/asm/setjmp.h

@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: GPL-2.0+
+/* SPDX-License-Identifier: GPL-2.0+ */
 /*
  * (C) 2018 Google, Inc
  * Written by Simon Glass <sjg@chromium.org>

lib/efi_selftest/efi_selftest_unaligned.c

@@ -1,10 +1,9 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
  * efi_selftest_unaligned
  *
  * Copyright (c) 2018 Heinrich Schuchardt <xypron.glpk@gmx.de>
  *
- * SPDX-License-Identifier:     GPL-2.0+
- *
  * Test unaligned memory access on ARMv7.
  */