unzip: Fix LICENSE

The contents of the LICENSE file included in the current source code
package match those of Info-ZIP license, which seems to originate from
the year 2009:

  This is version 2009-Jan-02 of the Info-ZIP license.

(From OE-Core rev: e7c9368e56a6ad90b4ffbba1b765e2b3a331c796)

(From OE-Core rev: f4b84a234662bc8f68e54d4753d9f03e4c2e7931)

Signed-off-by: Niko Mauno <niko.mauno@vaisala.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
Signed-off-by: Steve Sakoman <steve@sakoman.com>

meta/recipes-extended/unzip/unzip_6.0.bb

@@ -2,7 +2,7 @@ SUMMARY = "Utilities for extracting and viewing files in .zip archives"
 HOMEPAGE = "http://www.info-zip.org"
 DESCRIPTION = "Info-ZIP's purpose is to provide free, portable, high-quality versions of the Zip and UnZip compressor-archiver utilities that are compatible with the DOS-based PKZIP by PKWARE, Inc."
 SECTION = "console/utils"
-LICENSE = "BSD-3-Clause"
+LICENSE = "Info-ZIP"
 LIC_FILES_CHKSUM = "file://LICENSE;md5=94caec5a51ef55ef711ee4e8b1c69e29"
 PE = "1"