Patch merged into coreboot/master: skylake: Add Audio DSP device

the following patch was just integrated into master:
commit 026003e62169f31ea963100bf12cb1324d044882
Author: Duncan Laurie 
Date:   Tue May 10 15:42:42 2016 -0700

skylake: Add Audio DSP device

Add the Audio DSP device for skylake as a PCI driver with a static
    scan_bus handler so generic devices can be declared under it.

This is for devices like the Maxim 98357A which is connected on the
    I2S bus for data but has no control channel bus and instead just has
    a GPIO for channel selection and power down control and needs to
    describe that GPIO connection to the OS via ACPI.

Change-Id: Iae02132ff9c510562483108ab280323f78873afd
    Signed-off-by: Duncan Laurie 
    Reviewed-on: https://review.coreboot.org/14993
    Tested-by: build bot (Jenkins)
    Reviewed-by: Aaron Durbin

See https://review.coreboot.org/14993 for details.

-gerrit