ARM: gic-v3: Log the IRQs in RTB before handling an IRQ

gic-v3 did not log IRQs in RTB like gic-v2. Thus add the LOGK_IRQ log
before calling the IRQ handler like gic-v2.

Change-Id: I46a5951e733a05b9a7d5d6323568fa800dfb5d62
Signed-off-by: Cassidy Burden <cburden@codeaurora.org>