Runtime provisioning: Add partition

Add the runtime provisioning partition. This is a very basic partition
which allows platforms to hook in an interrupt from a provisioning comms
interface. The partition will wait for the interrupt and then process it
by calling into a platform specific HAL.

Change-Id: I478306c823e34cf6d18575039f5959d310b2afb2
Signed-off-by: Jackson Cooper-Driver <jackson.cooper-driver@arm.com>
5 files changed