Pullrequest fix backlight (#291)

* project : Merge the board configurations of Luckfox Pico Mini A and Luckfox Pico Mini B;
	  Merge the board configurations of Luckfox Pico Pro and Luckfox pico Max

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

* sysdrv/source/kernel/arch/arm/boot/dts : Merge the device tree configurations of Luckfox Pico Mini A and Luckfox Mini B;
					 Merge the device tree configurations of Luckfox Pico Pro and Luckfox Pico Max

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

* sysdrv/source/uboot : uboot add support for automatically executing custom commands defined by Luckfox

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

* sysdrv/source/kernel : The Luckfox Pico series dynamically loads the BLACKLIGHT_PWM driver, which hides display abnormalities that occur during the screen initialization process

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

* project/cfg/BoardConfig_IPC : Update the BoardConfig file and overlay file of the Luckfox Pico model that supports RGB, so that the BLACKLIGHT_PWM driver will be automatically loaded

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

* project/cfg/BoardConfig_IPC : Add rtl8723bs module support for Luckfox Pico Mini / Luckfox Pico Plus / Luckfox Pico WebBee / Luckfox Pico Pro Max

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

* sysdrv/drv_ko/wifi/insmod_wifi.sh : Add support for identifying rtl8723bs

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

* sysdrv/source/kernel/arch/arm/configs/luckfox_rv1106_linux_defconfig : Add usb_audio, ch343 and rtl8723bs support

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

* sysdrv/tools/board/buildroot : Enable the pcre2 package by default on startup

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

* project/app/rkipc/rkipc/common/network/network.c : Fix missing DNS issue when bringing up Wi-Fi interface

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

* README.md : Update description
README_CN.md : Update description

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

* project/cfg/BoardConfig_IPC/overlay/overlay-luckfox-config/usr/bin/luckfox-config : Disable UART2_M1 pinmux configuration

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

* project/cfg/BoardConfig_IPC/overlay/overlay-luckfox-config/etc/init.d/S99luckfoxconfigload : Remove the function of pressing the boot button to switch the screen model

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

* sysdrv/source/kernel/arch/arm/boot/dts : Standardize the writing format of the dst files

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

---------

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

project/cfg/BoardConfig_IPC/overlay/overlay-luckfox-buildroot-rgb/etc/init.d/S25backlight

@@ -0,0 +1,17 @@
+#!/bin/sh
+
+start(){
+	if [ -f "/oem/usr/ko/pwm_bl.ko" ]; then
+		sleep 1
+		insmod /oem/usr/ko/pwm_bl.ko
+	fi
+}
+
+case $1 in
+start)
+	start &
+	;;
+*)
+	exit 1
+	;;
+esac