irqchip: gic-v3: Clear restore configuration across save/restore

Clear all saved restore configuration, and changed spi
configuration, from prior save/restore.

Change-Id: Ic750b39d95d074d911406cf44b295c251532e40e
Signed-off-by: Neeraj Upadhyay <neeraju@codeaurora.org>
1 file changed