patch_2.5.9: clean up the recipe

Earlier the recipe was using 2.5.4 tar ball and a patch for upgrading to
2.5.9. Replaces these with pointer to 2.5.9 tarball.

Also noted that both 2.5.4 & 2.5.9 are GPLv2 sources.

Updated checksums and license of the recipe

Signed-off-by: Nitin A Kamble <nitin.a.kamble@intel.com>

meta/recipes-devtools/patch/patch.inc

@@ -2,7 +2,6 @@ SUMMARY = "Tool for applying a patch file"
 DESCRIPTION = "patch takes a patch file containing a difference listing \
 produced by the diff program and applies those differences to one or more \
 original files, producing patched versions."
-LICENSE = "GPL"
 PRIORITY = "standard"
 SECTION = "utils"
 

meta/recipes-devtools/patch/patch_2.5.9.bb

@@ -1,15 +1,12 @@
 require patch.inc
+LICENSE = "GPLv2"
 
-LIC_FILES_CHKSUM = "file://COPYING;md5=94d55d512a9ba36caa9b7df079bae19f"
-
-SRC_URI = "${GNU_MIRROR}/patch/patch-2.5.4.tar.gz \
-	   file://2.5.9.patch;patch=1 \
-	   file://debian.patch;patch=1 \
+SRC_URI += " file://debian.patch;patch=1 \
 	   file://install.patch;patch=1 \
            file://unified-reject-files.diff;patch=1 \
            file://global-reject-file.diff;patch=1 "
-
-SRC_URI[md5sum] = "ee5ae84d115f051d87fcaaef3b4ae782"
-SRC_URI[sha256sum] = "dd2fc5a745bfca5450d13d7032fdc47ab102514aae3efb3fe334a6eff87df799"
-S = "${WORKDIR}/patch-2.5.4"
 PR = "r2"
+
+LIC_FILES_CHKSUM = "file://COPYING;md5=94d55d512a9ba36caa9b7df079bae19f"
+SRC_URI[md5sum] = "dacfb618082f8d3a2194601193cf8716"
+SRC_URI[sha256sum] = "ecb5c6469d732bcf01d6ec1afe9e64f1668caba5bfdb103c28d7f537ba3cdb8a"