Import wwan.h uapi file

Import wwan.h uapi file at version from last kernel headers sync.

Signed-off-by: David Ahern <dsahern@kernel.org>

include/uapi/linux/wwan.h

@@ -0,0 +1,16 @@
+/* SPDX-License-Identifier: GPL-2.0-only WITH Linux-syscall-note */
+/*
+ * Copyright (C) 2021 Intel Corporation.
+ */
+#ifndef _WWAN_H_
+#define _WWAN_H_
+
+enum {
+	IFLA_WWAN_UNSPEC,
+	IFLA_WWAN_LINK_ID, /* u32 */
+
+	__IFLA_WWAN_MAX
+};
+#define IFLA_WWAN_MAX (__IFLA_WWAN_MAX - 1)
+
+#endif /* _WWAN_H_ */