project:build.sh: Added fastboot support; custom modifications to U-Boot and kernel implemented using patches.

project:cfg:BoardConfig_IPC: Added fastboot BoardConfig file and firmware post-scripts, distinguishing between
the BoardConfigs for Luckfox Pico Pro and Luckfox Pico Max. project:app: Added fastboot_client and rk_smart_door
for quick boot applications; updated rkipc app to adapt to the latest media library. media:samples: Added more
usage examples. media:rockit: Fixed bugs; removed support for retrieving data frames from VPSS. media:isp:
Updated rkaiq library and related tools to support connection to RKISP_Tuner. sysdrv:Makefile: Added support for
compiling drv_ko on Luckfox Pico Ultra W using Ubuntu; added support for custom root filesystem.
sysdrv:tools:board: Updated Buildroot optional mirror sources, updated some software versions, and stored device
tree files and configuration files that undergo multiple modifications for U-Boot and kernel separately.
sysdrv:source:mcu: Used RISC-V MCU SDK with RT-Thread system, mainly for initializing camera AE during quick
boot. sysdrv:source:uboot: Added support for fastboot; added high baud rate DDR bin for serial firmware upgrades.
sysdrv:source:kernel: Upgraded to version 5.10.160; increased NPU frequency for RV1106G3; added support for
fastboot.

Signed-off-by: luckfox-eng29 <eng29@luckfox.com>

sysdrv/source/mcu/rt-thread/include/rtlibc.h

@@ -0,0 +1,35 @@
+/*
+ * Copyright (c) 2006-2018, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ * 2017-01-21     Bernard      the first version
+ */
+
+#ifndef RTLIBC_H__
+#define RTLIBC_H__
+
+/* definitions for libc if toolchain has no these definitions */
+#include "libc/libc_stat.h"
+#include "libc/libc_errno.h"
+
+#include "libc/libc_fcntl.h"
+#include "libc/libc_ioctl.h"
+#include "libc/libc_dirent.h"
+#include "libc/libc_signal.h"
+#include "libc/libc_fdset.h"
+
+#if defined(__CC_ARM) || defined(__CLANG_ARM) || defined(__IAR_SYSTEMS_ICC__)
+typedef signed long off_t;
+typedef int mode_t;
+#endif
+
+#if defined(__MINGW32__) || defined(_WIN32)
+typedef signed long off_t;
+typedef int mode_t;
+#endif
+
+#endif
+