Fetch the needed Git tag by using BB_GIT_SHALLOW_EXTRA_REFS. This fixes
the following autotools configuration error:
| build-aux/git-version-gen: WARNING: .gitarchivever doesn't contain valid version tag
| build-aux/git-version-gen: ERROR: Can't find valid version. Please use valid git repository, released tarball or version tagged archive
| configure.ac:22: error: AC_INIT should be called with package and version arguments
Signed-off-by: Martin Schwan <m.schwan@phytec.de>
Signed-off-by: Anuj Mittal <anuj.mittal@oss.qualcomm.com>