tools/Rules.mk: fix distclean

tools/Rules.mk: fix distclean

Running 'make distclean' under tools will currently result in:

tools/Rules.mk:245: *** You have to run ./configure before building or installing the tools.  Stop.

This patch adds 'distclean', 'subdir-distclean%' and 'subdir-clean%' to
no-configure-targets, which allows 'make distclean' to run to completion.

Fixes: 00691c6c (tools: Allow to make *-dir-force-update without ./configure)
Signed-off-by: Paul Durrant <pdurrant@amazon.com>
Acked-by: Ian Jackson <ian.jackson@eu.citrix.com>
Acked-by: Wei Liu <wl@xen.org>