Add more missing Arch Linux build dependencies in PKGBUILD

pkg/arch/kernel-lts/PKGBUILD

@@ -8,7 +8,8 @@ url="https://www.kernel.org/"
 arch=(x86_64)
 license=(GPL2)
 makedepends=(
-  bc kmod libelf python perl tar xz
+  bc kmod libelf cpio perl tar xz
+  python
   xmlto python-sphinx python-sphinx_rtd_theme graphviz imagemagick
 )
 options=('!strip')

pkg/arch/kernel/PKGBUILD

@@ -12,7 +12,8 @@ url="https://git.archlinux.org/linux.git/log/?h=$_srctag"
 arch=(x86_64)
 license=(GPL2)
 makedepends=(
-  bc kmod libelf python perl tar xz
+  bc kmod libelf cpio perl tar xz
+  python
   # we don't need `pahole` as deps because we disable `CONFIG_DEBUG_INFO`
   # ignoring deps for docs because we don't build docs package
   git