plat-ti: Restore GIC context on resume
plat-ti: Restore GIC context on resume

The resume path may need to re-setup the GIC. This is cleared in
some suspend paths and so should be restored.

Signed-off-by: Andrew F. Davis <a6dfde0ec5c5124d26ab0cb4f9ab9a758dee1d6f@ti.com>

pascal-brand-st-dev/optee_os,pascal-brand-st-dev/optee_os,pascal-brand-st-dev/optee_os,pascal-brand-st-dev/optee_os,pascal-brand-st-dev/optee_os