ARMv7: start.S: stay in HYP mode if u-boot is entered in it

The KVM and Xen hypervisors for the Cortex-A15 virtualization
implementation need to be entered in HYP mode. Should the primary
board firmware already enter HYP mode (Calxeda firmware does that),
we should not deliberately drop back to SVC mode.
Since U-boot does not use the MMU, running in HYP mode is just fine.

Signed-off-by: Andre Przywara <andre.przywara@linaro.org>
smdk5410: Remove switch from NS HYP to NS SVC to allow booting in HYP mode.
ARMv7: Add support for HYP mode to exception handlers.
ARMv7: Fix invalid memory access bug in swi interrupt handler
Merge pull request #7 from FiachAntaw/odroid-v2012.07-virt

Odroid v2012.07 virt

For more information over this patch series. Refer to:
http://forum.odroid.com/viewtopic.php?f=64&t=2778&start=40