NUC6i7KYK: patch to enable SD card and internal USB ports

[Alex Gerchanovsky]

Different approaches to enable O2 SDCard reader discussed here:
APPLESDXC DRIVER/DSDT PATCH FOR O2 MICRO SD CARD READERS

Modified files:
SSDT-USB.dsl
config_nuc6_sc.plist

Don't know how to attach the file. Link to patch on my GoogleDrive SDCard_internal_USB.diff