AUTHORS: Move src/drivers/[a*-i*] copyrights into AUTHORS file

As discussed on the mailing list and voted upon, the coreboot project
is going to move the majority of copyrights out of the headers and into
an AUTHORS file.  This will happen a bit at a time, as we'll be unifying
license headers at the same time.

Updated Authors file is in a separate commit.

Signed-off-by: Martin Roth <martin@coreboot.org>
Change-Id: I1acea8c975d14904b7e486dc57a1a67480a6ee6e
Reviewed-on: https://review.coreboot.org/c/coreboot/+/36178
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
diff --git a/src/drivers/ipmi/ipmi_kcs_ops.c b/src/drivers/ipmi/ipmi_kcs_ops.c
index baa72a8..90f19dd 100644
--- a/src/drivers/ipmi/ipmi_kcs_ops.c
+++ b/src/drivers/ipmi/ipmi_kcs_ops.c
@@ -1,8 +1,6 @@
 /*
  * This file is part of the coreboot project.
  *
- * Copyright (C) 2019 9elements Agency GmbH
- *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License as
  * published by the Free Software Foundation; version 2 of
@@ -12,7 +10,9 @@
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  * GNU General Public License for more details.
- *
+ */
+
+/*
  * Place in devicetree.cb:
  *
  * chip drivers/ipmi