[ramdisk] add cvitek pre-built ramdisk

Change-Id: Ic7d2046a23358129eaf621b5558984a64fa7361d

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

@@ -0,0 +1,16 @@
+/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
+#ifndef __LINUX_RADEONFB_H__
+#define __LINUX_RADEONFB_H__
+
+#include <asm/ioctl.h>
+#include <linux/types.h>
+
+#define ATY_RADEON_LCD_ON	0x00000001
+#define ATY_RADEON_CRT_ON	0x00000002
+
+
+#define FBIO_RADEON_GET_MIRROR	_IOR('@', 3, size_t)
+#define FBIO_RADEON_SET_MIRROR	_IOW('@', 4, size_t)
+
+#endif
+