usb: renesas_usbhs: Use specific struct instead of USBHS_TYPE_* enums

This patch adds a specific struct "usbhs_of_data" to add a new SoC
data easily instead of code basis in the future.

Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Simon Horman <horms+renesas@verge.net.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>