[ramdisk] add cvitek pre-built ramdisk

Change-Id: Ic7d2046a23358129eaf621b5558984a64fa7361d

ramdisk/initramfs/glibc_riscv64/usr/include/linux/un.h

@@ -0,0 +1,16 @@
+/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
+#ifndef _LINUX_UN_H
+#define _LINUX_UN_H
+
+#include <linux/socket.h>
+
+#define UNIX_PATH_MAX	108
+
+struct sockaddr_un {
+	__kernel_sa_family_t sun_family; /* AF_UNIX */
+	char sun_path[UNIX_PATH_MAX];	/* pathname */
+};
+
+#define SIOCUNIXFILE (SIOCPROTOPRIVATE + 0) /* open a socket file with O_PATH */
+
+#endif /* _LINUX_UN_H */