DRIVERS: USB: Initialize HSIC PHYs and enable network support

Arndale board has AX88760, which is USB 2.0 Hub & USB 2.0 Ethernet Combo
controller, connected to HSIC Phy of USB host controller via USB3503 hub.

This patch initializes the HSIC PHYs, performs reset sequence for USB3503
hub and enables the relevant config options for network to work.

Signed-off-by: Inderpal Singh <inderpal.singh@linaro.org>
3 files changed