MTK USER版本禁止log输出

1.bootable/bootloader/lk/app/mt_boot/mt_boot.c

sprintf(cmdline,"%s%s",cmdline," printk.disable_uart=1");

2.kernel-3.10/arch/arm64/configs/lentk6735_65c_l1_defconfig

#CONFIG_MT_PRINTK_UART_CONSOLE=y
#CONFIG_MTK_SERIAL_CONSOLE=y
#CONFIG_SERIAL_CORE_CONSOLE=y