The origianl understanding of clock is wrong. The EHCI controller
only have one clock input.
Passing clock name by pdata is wrong. The clock is defined by device
iteself.
Acked-by: NAlan Stern <stern@rowland.harvard.edu>
Signed-off-by: NChao Xie <chao.xie@marvell.com>
Signed-off-by: NFelipe Balbi <balbi@ti.com>