swupdate: Add missing licenses in LICENSE

By grep'ing the source the following licenses are used in the source
code but are not listed in the LICENSE variable.

- GPL-2.0-or-later: Used throughout the code
- LGPL-2.1-or-later: Used throughout the code
- ISC: Used by strlcpy.c
- BSD-1-Clause: Used in the fs module
- BSD-3-Clause: Used by bsdqueue

Signed-off-by: Ricardo Simoes <ricardo.simoes@pt.bosch.com>
Signed-off-by: Mark Jonas <mark.jonas@de.bosch.com>

recipes-support/swupdate/swupdate.inc

@@ -6,7 +6,7 @@ DEPENDS += "libconfig zlib libubootenv json-c"
 # SWUpdate licensing is described in the following pages:
 # https://sbabic.github.io/swupdate/licensing.html
 # rst form: file://doc/source/licensing.rst
-LICENSE = "GPL-2.0-or-later & LGPL-2.1-only & MIT"
+LICENSE = "GPL-2.0-only & GPL-2.0-or-later & LGPL-2.1-or-later & LGPL-2.1-only & MIT & ISC & BSD-1-Clause & BSD-3-Clause"
 LICENSE:${PN}-lua = "LGPL-2.1-only & MIT"
 LICENSE:${PN}-www = "MIT"