package/time: add upstream sha1 hash

Also added a reference for upstream-provided sha1 & sha256 hashes.

Signed-off-by: Bernd Kuhls <bernd.kuhls@t-online.de>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

package/time/time.hash

@@ -1,3 +1,5 @@
-# Locally calculated
+# From https://lists.gnu.org/archive/html/info-gnu/2018-03/msg00004.html
+sha1	75068c26abbed3ad3980685bae21d7202d288317				time-1.9.tar.gz
 sha256	fbacf0c81e62429df3e33bda4cee38756604f18e01d977338e23306a3e3b521e	time-1.9.tar.gz
+# Locally calculated
 sha256	8ceb4b9ee5adedde47b31e975c1d90c73ad27b6b165a1dcd80c7c545eb65b903	COPYING