lib/Kconfig.debug: Use CONFIG_PAHOLE_VERSION

lib/Kconfig.debug: Use CONFIG_PAHOLE_VERSION

Now that CONFIG_PAHOLE_VERSION exists, use it in the definition of
CONFIG_PAHOLE_HAS_SPLIT_BTF and CONFIG_PAHOLE_HAS_BTF_TAG to reduce the
amount of duplication across the tree.

Signed-off-by: Nathan Chancellor <nathan@kernel.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20220201205624.652313-5-nathan@kernel.org
(cherry picked from bpf-next commit 6323c81350b73a4569cf52df85f80273faa64071)
(conflicts did not apply PAHOLE_HAS_BTF_TAG hunk as did not cherry-pick pre-req)
Signed-off-by: Dimitri John Ledkov <dimitri.ledkov@canonical.com>
Signed-off-by: Paolo Pisati <paolo.pisati@canonical.com>