package/tar: drop specific version for host variant

Now that we can generate reproducible archives, with all known tar
versions starting with 1.27, we don't need to clamp the host-tar
version to the old 1.29, and can now bump to any later version.

Drop the host-tar version, and use the same as the target variant.

Note that we still need the _SOURCE trick, to avoid depending on tar
to extract the tar tarball...

Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>
Cc: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Cc: Vincent Fazio <vfazio@xes-inc.com>
Reviewed-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
Reviewed-by: Vincent Fazio <vfazio@xes-inc.com>

package/tar/tar.mk

@@ -30,14 +30,10 @@ endif
 
 $(eval $(autotools-package))
 
-# host-tar is used to create the archives in the VCS download backends and tar
-# 1.30 and forward have changed the archive format. So archives generated with
-# earlier versions are not bit-for-bit reproducible and the hashes would not
-# match. Hence host-tar must be kept at version 1.29.
-HOST_TAR_VERSION = 1.29
 # host-tar: use cpio.gz instead of tar.gz to prevent chicken-egg problem
 # of needing tar to build tar.
-HOST_TAR_SOURCE = tar-$(HOST_TAR_VERSION).cpio.gz
+HOST_TAR_SOURCE = tar-$(TAR_VERSION).cpio.gz
+
 define HOST_TAR_EXTRACT_CMDS
 	mkdir -p $(@D)
 	cd $(@D) && \