feat(smmu): separate out smmuv3_security_init from smmuv3_init

Split the smmuv3_init() to separate smmuv3_security_init() from it in
order to allow skipping the default deny policy on reset for certain
SMMUv3 implementations.
Additionally, fix a couple of MISRA warnings.

Signed-off-by: Vijayenthiran Subramaniam <vijayenthiran.subramaniam@arm.com>
Signed-off-by: Vivek Gautam <vivek.gautam@arm.com>
Change-Id: I2127943e709dd1ded34145bd022c930e351bbb4a
2 files changed