tools bugs: make clean deletes files in the git tree

[Adrian Hunter]

Hi

Doing:

	make -C tools clean

Results in:

	git diff --stat
	 tools/pci/pcitest.sh                                  |  72 ----------------
	 tools/testing/selftests/livepatch/test-callbacks.sh   | 587 ----------------------------------------------------------------------------------------------------------------------------
	 tools/testing/selftests/livepatch/test-livepatch.sh   | 168 ------------------------------------
	 tools/testing/selftests/livepatch/test-shadow-vars.sh |  60 -------------
	 4 files changed, 887 deletions(-)

i.e. 'make clean' seems to be deleting files that are in the git tree.

Regards
Adrian