更新loglevel=3，USB配置为ko，去掉显示屏配置

u-boot/arch/arm/dts/ark1668e_devb_emmc.dts

@@ -12,7 +12,7 @@
 	interrupt-parent = <&gic>;
 
 	chosen {
-		bootargs = "console=ttyS0,115200 earlyprintk loglevel=3 clk_ignore_unused";
+		bootargs = "console=ttyS0,115200 earlyprintk loglevel=8 clk_ignore_unused";
 		stdout-path = "serial0:115200n8";
 	};
 

u-boot/include/configs/ark1668e_devb.h

@@ -208,7 +208,7 @@
 		"emmc write ${loadaddr} reversingtrack ${filesize}; " \
 		"else setenv reversingtracksize 0; fi\0" \
 	"emmcargs=setenv bootargs console=ttyS0,115200 " \
-		"earlyprintk  loglevel=8 clk_ignore_unused lpj=2285568 " \
+		"earlyprintk  loglevel=3 clk_ignore_unused lpj=2285568 " \
 		"${emmcparts} " \
 		"root=${emmcroot} " \
 		"rootfstype=${emmcrootfstype}\0" \

u-boot/include/configs/ark1668e_devb_emmc.h

@@ -206,7 +206,7 @@
 		"emmc erase.part bootloader_bak; " \
 		"emmc write ${loadaddr} bootloader_bak ${filesize}; fi\0" \
 	"emmcargs=setenv bootargs console=ttyS0,115200 " \
-		"earlyprintk  loglevel=8 clk_ignore_unused lpj=2285568 " \
+		"earlyprintk  loglevel=3 clk_ignore_unused lpj=2285568 " \
 		"${emmcparts} " \
 		"trackid=${switch_lang_id} " \
 		"root=${emmcroot} " \