feat(spmc): add support for forwarding a secure interrupt to the SP

This patch adds support for forwarding a secure interrupt that
preempts the normal world to a SP for top-half interrupt handling.

Signed-off-by: Achin Gupta <achin.gupta@arm.com>
Signed-off-by: Marc Bonnici <marc.bonnici@arm.com>
Change-Id: Iaa6e96f4cf8922ba5b6d128a19359df15e44158d
1 file changed