edison: move audio/usb to audio/generic/usb

Cherry-picked again by simonwilson@google.com due to
change being skipped by auto-merger.

Tracked-On: https://jira01.devtools.intel.com/browse/BP-175
Signed-off-by: teng jin chung <jin.chung.teng@intel.com>
Signed-off-by: Bruce Beare <bruce.j.beare@intel.com>

Change-Id: Ie5ec9957acdd6231961c28e5492b20cf584fb54e
diff --git a/BoardConfig.mk b/BoardConfig.mk
index 46f048d..933ae2d 100644
--- a/BoardConfig.mk
+++ b/BoardConfig.mk
@@ -24,7 +24,7 @@
 # Add lights HAL
 $(call add_peripheral, intel, light/mraa)
 # Add audio support
-$(call add_peripheral, intel, audio/usb)
+$(call add_peripheral, intel, audio/generic/usb)
 # Add sensor support
 $(call add_peripheral, intel, sensors/mraa)