Fix emulator OS X build when using the Android build system.

Change-Id: Ia19b4e14b84c12edc040a70144a97b5ca9474b00
diff --git a/android/config/darwin-x86/config-host.h b/android/config/darwin-x86/config-host.h
index 23ccb13..f72cf17 100644
--- a/android/config/darwin-x86/config-host.h
+++ b/android/config/darwin-x86/config-host.h
@@ -10,6 +10,6 @@
 #define O_LARGEFILE 0
 #define MAP_ANONYMOUS MAP_ANON
 #define HAVE_IOVEC 1
-#define _BSD 1
+#define CONFIG_BSD 1
 #define CONFIG_SKINS 1
 #define CONFIG_UNAME_RELEASE ""
diff --git a/android/config/freebsd-x86/config-host.h b/android/config/freebsd-x86/config-host.h
index 8a08339..805e5de 100644
--- a/android/config/freebsd-x86/config-host.h
+++ b/android/config/freebsd-x86/config-host.h
@@ -8,6 +8,6 @@
 #define QEMU_VERSION "0.8.2"
 #define O_LARGEFILE 0
 #define MAP_ANONYMOUS MAP_ANON
-#define _BSD 1
+#define CONFIG_BSD 1
 #define CONFIG_UNAME_RELEASE ""
 #define CONFIG_SKINS 1