usb: host: xhci-rcar: add support for r8a77965

usb: host: xhci-rcar: add support for r8a77965

BugLink: http://bugs.launchpad.net/bugs/1756978
commit 015dbeb2282030bf56762e21d25f09422edfd750 upstream.

This patch adds support for r8a77965 (R-Car M3-N).

Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Reviewed-by: Simon Horman <horms+renesas@verge.net.au>
Reviewed-by: Rob Herring <robh@kernel.org>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Thadeu Lima de Souza Cascardo <cascardo@canonical.com>