classes/buildhistory: sort FILELIST in package info

The FILELIST order can vary depending on the order the files were
written which may change between builds with no ill effect, so sort the
list prior to writing it.

(From OE-Core rev: 2e9981000a211a89f88d7728393cc231e466581a)

Signed-off-by: Paul Eggleton <paul.eggleton@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/classes/buildhistory.bbclass

@@ -186,6 +186,7 @@ python buildhistory_emit_pkghistory() {
 				fstat = os.lstat(os.path.join(root, f))
 				pkginfo.size += fstat.st_size
 				filelist.append(os.sep + os.path.join(relpth, f))
+		filelist.sort()
 		pkginfo.filelist = " ".join(filelist)
 
 		write_pkghistory(pkginfo, d)