ebtables: fix PKG_MIRROR_HASH

Current PKG_MIRROR_HASH is wrong, but it went unnoticed, because the
tarball is being fetched from @OPENWRT project mirrors. Can be
reproduced with:

 make package/ebtables/{download,check} FIXUP=1 DL_DIR=/tmp PKG_MIRROR_HASH=''

Signed-off-by: Petr Štetiar <[email protected]>
Link: https://github.com/openwrt/openwrt/pull/20322
Signed-off-by: Robert Marko <[email protected]>
(cherry picked from commit 7d4edb21b62a84a3a9442263b3080c3d443e12f7)

package/network/utils/ebtables/Makefile

@@ -12,9 +12,9 @@ PKG_SOURCE_DATE:=2018-06-27
 PKG_RELEASE:=2
 
 PKG_SOURCE_URL:=https://git.netfilter.org/ebtables
+PKG_MIRROR_HASH:=3039d73b167c41025b1b401b647743b9c6d786613c693eef34de325b30de6d47
 PKG_SOURCE_PROTO:=git
 PKG_SOURCE_VERSION:=48cff25dfea5b37e16ba5dc6601e98ab140f5f99
-PKG_MIRROR_HASH:=1ee560498e1a047b329eab3dad8425ae51e7f0527e4495efb99481ca11206b37
 
 PKG_LICENSE:=GPL-2.0
 PKG_CPE_ID:=cpe:/a:netfilter:ebtables