USB: chipidea updates for v4.3-rc1

The main changes are adding several system interfaces for
tuning performance, and each vendors can adjust them according
to their design configurations.

Others are tiny improvements, like more well siTD supports,
USB_DEVICE_A_HNP_SUPPORT supports, etc.
usb: chipidea: add tx/rx burst size configuration interface

The user can adjust it through dts or platform data

Signed-off-by: Peter Chen <peter.chen@freescale.com>
4 files changed