rpkg: Use %setup in %prep, add version to tarball

By automatically generating the name of the source tarball, an
rpkg macro is no longer needed for the setup macro in %prep.

mlxbf-bfscripts.spec.rpkg

@@ -14,7 +14,7 @@ BuildArch: noarch
 # cd bfscripts
 # git checkout {{{ v=$(git describe --tags); if grep -q -- '-g' <<<"$v"; then printf $(git rev-parse HEAD); else printf "$v"; fi }}}
 # rpkg spec --sources
-Source: {{{ git_dir_pack dir_name=bfscripts source_name=mlxbf-bfscripts.tar.gz }}}
+Source: {{{ name=$(rpmspec -q --qf "%{name}-%{version}\n" mlxbf-bfscripts.spec.rpkg); git_dir_pack dir_name="$name" source_name="$name".tar.gz }}}
 
 BuildRequires: systemd-rpm-macros
 BuildRequires: python3-devel
@@ -37,8 +37,7 @@ Requires: systemd
 Useful scripts for managing Mellanox BlueField hardware.
 
 %prep
-# Note: source generated by rpkg, see Source
-{{{ git_dir_setup_macro dir_name=bfscripts }}}
+%setup
 pathfix.py -pni "%{__python3} %{py3_shbang_opts}" mlx-mkbfb
 
 %build