[U-Boot] [RESEND] drivers/usb/ehci: Use platform-specific accessors

[Vladimir Boroda]

This patch should have been rejected.  It no longer breaks the build, but it break the functionality on big-endian systems. The readl() and writel() macros already do the endian conversion assuming the port is in little-endian format.  So after this patch the EHCI registers are now read incorrectly, at least on PPC.  

You should remove the le32_to_cpu() macros if using the readl() and writel() accessors.