usb: Enable support for 64bit EHCI host controllers in arm64.

arm64 architecture handles correctly 64bit DMAs and can enable
support for 64bit EHCI host controllers.

Signed-off-by: Liviu Dudau <Liviu.Dudau@arm.com>
Signed-off-by: Ryan Harkin <ryan.harkin@linaro.org>
Signed-off-by: Mark Brown <broonie@linaro.org>
1 file changed