am 06fcfc50: am 02e30945: Merge "Fix missing #includes in hardware/libhardware."

* commit '06fcfc506c44724bbd8089e8971b77aa8edfdde8':
  Fix missing #includes in hardware/libhardware.
diff --git a/modules/usbaudio/alsa_device_proxy.c b/modules/usbaudio/alsa_device_proxy.c
index 902a6d2..77e8ca3 100644
--- a/modules/usbaudio/alsa_device_proxy.c
+++ b/modules/usbaudio/alsa_device_proxy.c
@@ -20,6 +20,8 @@
 
 #include <log/log.h>
 
+#include <errno.h>
+
 #include "alsa_device_proxy.h"
 
 #include "audio_logging.h"