package/lzop: use upstream download hash

The official website includes a sha256 next to the download link.

Signed-off-by: Daniel Lang <d.lang@abatec.at>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

package/lzop/lzop.hash

@@ -1,3 +1,4 @@
-# Locally calculated
+# From http://www.lzop.org
 sha256  7e72b62a8a60aff5200a047eea0773a8fb205caf7acbe1774d95147f305a2f41  lzop-1.04.tar.gz
+# Locally calculated
 sha256  8177f97513213526df2cf6184d8ff986c675afb514d4e68a404010521b880643  COPYING