Cppcheck: Fix warnings with updated tf-m-ci-scripts

Several cppcheck warnings are fixed in the following modules:
- Interface
- Partitions: Crypto/ITS/PS/Platform
- SPRTL headers
- Various headers

Signed-off-by: Antonio de Angelis <antonio.deangelis@arm.com>
Change-Id: I08c9fa10895c0b723a2d8b3cdcd386b1752facaa
13 files changed