checkpatch: repair faulty executable-bit check.

Existing executable-bit test only works on second and later files
contained in the patch.  Correct this so all patches in the file
are tested.

Change-Id: Ie9363473f0d2fc067f9c593c86495d15e8e5d546
Signed-off-by: Gregory Bean <gbean@codeaurora.org>
1 file changed