如何在sdk6.0里的uboot2013.01.01-psp16.00.00.00里关闭usb检测的功能，现在每次上电uboot都会检测usb设备，并打印
U-Boot SPL 2013.01.01 (Sep 29 2014 - 10:41:06)
Could not probe the EEPROM; something fundamentally wrong on the I2C bus.
Could not get board ID.
musb-hdrc: ConfigData=0xde (UTMI-8, dyn FIFOs, bulk combine, bulk split, HB-ISO Rx, HB-ISO Tx, SoftConn)
musb-hdrc: MHDRC RTL version 2.0
musb-hdrc: setup fifo_mode 4
musb-hdrc: 28/31 max ep, 16384/16384 memory
USB Peripheral mode controller at 47401000 using PIO, IRQ 0
musb-hdrc: ConfigData=0xde (UTMI-8, dyn FIFOs, bulk combine, bulk split, HB-ISO Rx, HB-ISO Tx, SoftConn)
musb-hdrc: MHDRC RTL version 2.0
musb-hdrc: setup fifo_mode 4
musb-hdrc: 28/31 max ep, 16384/16384 memory
USB Host mode controller at 47401800 using PIO, IRQ 0
这样会影响启动时间，如何屏蔽掉此功能，需要undefine什么组件，谢谢
