package/lzip: use .tar.gz format for source

Using a lzip compressed tarball to build host-lzip so lzip compressed
tarballs can be extracted naturally doesn't work.  Use the .tar.gz format
instead.

Reported-by: Waldemar Brodkorb <wbx@openadk.org>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/lzip/lzip.hash

@@ -1,4 +1,4 @@
 # From https://lists.nongnu.org/archive/html/lzip-bug/2022-02/msg00000.html
-sha256  ea02b9e6fb25d0e1a1d3ef4fdeb6ab26b931f1ece66fa1cee2983c95215e930a  lzip-1.23.tar.lz
+sha256  4792c047ddf15ef29d55ba8e68a1a21e0cb7692d87ecdf7204419864582f280d  lzip-1.23.tar.gz
 # Locally calculated
 sha256  3d77c1a58fbde5ddba612d1fe09965e20a3804953eca12e8c1892298bb8a5eef  COPYING

package/lzip/lzip.mk

@@ -5,7 +5,6 @@
 ################################################################################
 
 LZIP_VERSION = 1.23
-LZIP_SOURCE = lzip-$(LZIP_VERSION).tar.lz
 LZIP_SITE = http://download.savannah.gnu.org/releases/lzip
 LZIP_LICENSE = GPL-2.0+
 LZIP_LICENSE_FILES = COPYING