ARM: EXYNOS4: Add USB EHCI device to ORIGEN board

Signed-off-by: Pankaj Dubey <pankaj.dubey@samsung.com>
Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
[kgene.kim@samsung.com: re-ordering changes in Kconfig]
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>