package/18xx-ti-utils: switch to git repo

Downloading the snapshot tarball has been unstable in the past so we
switch to git for fetching the source code.

Fixes:
https://autobuild.buildroot.net/results/8b9/8b9b15e578ee13c47bdfe77f8bd79cd34c49de91/
https://autobuild.buildroot.net/results/bfc/bfcfb6e5014e017334604ba8fdcfac2acc65d161/
https://autobuild.buildroot.net/results/6c6/6c69077ea076c3c28d0e8599913cde31ee27b0c5/
https://autobuild.buildroot.net/results/b43/b431fabedd709f660f556a7a6539a0b1e28aeb49/

Signed-off-by: Bernd Kuhls <bernd@kuhls.net>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/18xx-ti-utils/18xx-ti-utils.hash

@@ -1,3 +1,3 @@
 # Locally calculated
-sha256  ce0185ba8a9bf456cc94a798bf66903775065e337e53ff812f18a6d88f5bac13  18xx-ti-utils-R8.8.tar.xz
+sha256  33be3c90719bf36d5da76c6faaefb07bf3697635f81b86e28b92307d7825483e  18xx-ti-utils-R8.8-git4.tar.gz
 sha256  363cef40b276a7a91ebcff3f78626d9cfe5e5a51927c725236007259403d5fc4  COPYING

package/18xx-ti-utils/18xx-ti-utils.mk

@@ -4,9 +4,9 @@
 #
 ################################################################################
 
-18XX_TI_UTILS_VERSION = 8.8
-18XX_TI_UTILS_SITE = https://git.ti.com/cgit/wilink8-wlan/18xx-ti-utils/snapshot
-18XX_TI_UTILS_SOURCE = 18xx-ti-utils-R$(18XX_TI_UTILS_VERSION).tar.xz
+18XX_TI_UTILS_VERSION = R8.8
+18XX_TI_UTILS_SITE = https://git.ti.com/cgit/wilink8-wlan/18xx-ti-utils
+18XX_TI_UTILS_SITE_METHOD = git
 18XX_TI_UTILS_DEPENDENCIES = libnl
 18XX_TI_UTILS_LICENSE = BSD-3-Clause
 18XX_TI_UTILS_LICENSE_FILES = COPYING