This is an adoption of the linux kernel commit

| commit ab9ca61
| Author: Michal Marek <mmarek@suse.com>
| Date:   Thu Oct 15 11:14:02 2015 +0200
|
|     tags: Do not try to index defconfigs
|
|     The defconfig files are in predictable locations, so there is no need to
|     index them. Plus, the script was only looking for files named
|     'defconfig', which only works on a few architectures nowadays.
|
|     Signed-off-by: Michal Marek <mmarek@suse.com>

Signed-off-by: Antony Pavlov <antonynpavlov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>