I noticed now that I don't have the choice "Sound Support" in
kernel_menuconfig when building for target Foxboard. I have this choice
if I select target x86 instead. I also tried target bcm63xx, and this target
did not have "Sound Support".
Is usb-sound simply not supported
on all targets? I think usb-sound should be a high level driver that is
common for all targets and doesn't need patches. Am I wrong?