drivers: GICv3: Enable logging of interrupts that triggered wakeup

This change enables logging of irq number and name which triggered
wake up of the system from deep sleep. This helps in debugging the
spurious wakeups due to interrupts from various subsystems.

CRs-Fixed: 964228
Change-Id: Ifd03fcdcfc9afd3ae96a6942293c81a872cc0df6
Signed-off-by: Jeevan Shriram <jshriram@codeaurora.org>