scripts/checkpatch.pl: don't search for Doxyfile when checking top_of_kernel_tree()
Doxygen documentation is removed in the commit
commit 98360be
Author: Sascha Hauer <s.hauer@pengutronix.de>
Date: Tue Jun 17 10:27:03 2014 +0200
Documentation: remove doxygen documentation
But checkpatch.pl still trying to check 'Doxyfile' presence.
There is not such 'Doxyfile' and checkpatch.pl exits with
'Must be run from the top-level dir. of a kernel tree' message.
Signed-off-by: Antony Pavlov <antonynpavlov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>