GIC-600: Fix MISRA-2012 defects

This patch fixes violation of Rules 10.1, 10.4,
11.9 and 13.2 reported by MISRA-2012 scan.

Change-Id: Ibe9190cb0f26ae85d9a31db8e92fbd32f1740e25
Signed-off-by: Alexei Fedorov <Alexei.Fedorov@arm.com>
2 files changed