Make android build not depend on existance of linux (PC) bluetooth libraries

Change-Id: Ia66c67f664055243b3cc9070049346f368ba9365
diff --git a/lib/bluetooth/bt.h b/lib/bluetooth/bt.h
index 2a72c97..cc36b31 100644
--- a/lib/bluetooth/bt.h
+++ b/lib/bluetooth/bt.h
@@ -1,4 +1,4 @@
-// +build linux
+// +build linux,!android
 
 #include <stdlib.h>