dtv-scan-tables: use a slightly older commit hash

The commit hash chosen by Yann exists in the repository accessible by
git://, but not the one accessible by http://, which is lagging 3
commits behind the git:// repository, for some reason.

For the time being, revert to the latest commit available in the
http:// repository.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

package/dtv-scan-tables/dtv-scan-tables.mk

@@ -4,7 +4,7 @@
 #
 ################################################################################
 
-DTV_SCAN_TABLES_VERSION = cfc29758d1357b724f3bf27c3b1b277e242841fa
+DTV_SCAN_TABLES_VERSION = 7809ca1c04e688f35d09b8c1b2ac9b8ef4865322
 DTV_SCAN_TABLES_SITE = http://linuxtv.org/git/dtv-scan-tables.git
 DTV_SCAN_TABLES_SITE_METHOD = git