coreboot: Check for a file for local defconfig
drwxr-xr-x - coreboot
drwxr-xr-x - depthcharge
drwxr-xr-x - ec
drwxr-xr-x - libpayload
drwxr-xr-x - linux
drwxr-xr-x - sniper
drwxr-xr-x - sunxi
drwxr-xr-x - tegra
drwxr-xr-x - u-boot
drwxr-xr-x - veyron