options/linux: add missing MS_* defines to sys/mount.h
@@ -12,6 +12,8 @@ extern "C" {
#define MS_NOEXEC 16
#define MS_SYNCHRONOUS 32
#define MS_NOATIME 64
+#define MS_PRIVATE 128
+#define MS_REC 256
int mount(const char *source, const char *target,
const char *fstype, unsigned long flags, const void *data);
