classes: Add SPDX license identifiers

As stated in our top level license files, the license is MIT unless
otherwise stated. Add SPDX identifers accordingly. Replace older
license statementa with the standardised syntax. Also drop "All
Rights Reserved" expression as it isn't used now, doesn't mean anything
and is confusing.

(From OE-Core rev: 081a391fe09a21265881e39a2a496e4e10b4f80b)

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 1 insertions, 1 deletions

diff --git a/meta/classes/uboot-extlinux-config.bbclass b/meta/classes/uboot-extlinux-config.bbclass
index dcebe7ff31..86a7d30ca0 100644
--- a/meta/classes/uboot-extlinux-config.bbclass
+++ b/meta/classes/uboot-extlinux-config.bbclass
@@ -54,7 +54,7 @@
 #   APPEND root=/dev/mmcblk2p2 rootwait rw console=${console}
 #
 # Copyright (C) 2016, O.S. Systems Software LTDA.  All Rights Reserved
-# Released under the MIT license (see packages/COPYING)
+# SPDX-License-Identifier: MIT
 #
 # The kernel has an internal default console, which you can override with
 # a console=...some_tty...