shadow: Use specific BSD license variant

Make the license more accurate by specifying the specific variant of BSD
license instead of the generic one. This helps with SPDX license
attribution as "BSD" is not a valid SPDX license.

(From OE-Core rev: 65e3b23e1b266653fd30c90222e953f7e37fba0c)

Signed-off-by: Joshua Watt <JPEWhacker@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-extended/shadow/shadow.inc

@@ -3,7 +3,7 @@ HOMEPAGE = "http://github.com/shadow-maint/shadow"
 DESCRIPTION = "${SUMMARY}"
 BUGTRACKER = "http://github.com/shadow-maint/shadow/issues"
 SECTION = "base/utils"
-LICENSE = "BSD | Artistic-1.0"
+LICENSE = "BSD-3-Clause | Artistic-1.0"
 LIC_FILES_CHKSUM = "file://COPYING;md5=ed80ff1c2b40843cf5768e5229cf16e5 \
                     file://src/passwd.c;beginline=2;endline=30;md5=5720ff729a6ff39ecc9f64555d75f4af"