configure usb control register
| USB_VREFH | |
| USB_VREFL | |
| USB_VREF_OVERRIDE | |
| USB_PAD_PULL_OVERRIDE | |
| USB_DP_PULLUP | |
| USB_DP_PULLDOWN | |
| USB_DM_PULLUP | |
| USB_DM_PULLDOWN | |
| USB_PULLUP_VALUE | |
| USB_PAD_ENABLE_OVERRIDE | |
| USB_PAD_ENABLE | |
| USB_TXM | |
| USB_TXP | |
| USB_TX_EN | |
| USB_TX_EN_OVERRIDE | |
| USB_RESET_DISABLE | |
| IO_MUX_RESET_DISABLE |