ARM: dts: OMAP5: Update the timer and GIC nodes for HYP kernel support

To be able to run kernel in HYP mode, virtual timer
and GIC node information needs to be populated.

Signed-off-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Signed-off-by: Benoit Cousson <benoit.cousson@linaro.org>