package/x11r7/xserver_xorg-server: add license hash

Signed-off-by: Adam Duskett <Aduskett@gmail.com>
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
(cherry picked from commit 4801346196e6a4f92278968a58ec0d24b62655ce)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/x11r7/xserver_xorg-server/xserver_xorg-server.hash

@@ -8,3 +8,6 @@ md5 c9fc7e21e11286dbedd22c00df652130  xorg-server-1.20.5.tar.bz2
 sha1 fea6fd34c7f48b3c69fbecd8fb294eaa1498e69c  xorg-server-1.20.5.tar.bz2
 sha256 a81d8243f37e75a03d4f8c55f96d0bc25802be6ec45c3bfa5cb614c6d01bac9d  xorg-server-1.20.5.tar.bz2
 sha512 625f0626b122cf95600abe382c3217348999357a0e2d2443092f1b67cff1c98d7ef09303884ceaeac181e0555dc56b0d4d44bda45cc464dac2d9a50c5b32d631  xorg-server-1.20.5.tar.bz2
+
+# Locally calculated
+sha256 4cc0447a22635c7b2f1a93fec4aa94f1970fadeb72a063de006b51cf4963a06f  COPYING