refactor(smc_fuzzing): add multi cpu capability

Using the MULTI_CPU_SMC_FUZZER option in tftf config
multiple CPU's will be enabled to produce fuzzing SMC
calls for a given platform.  They will all use the
same device tree file for random execution of the calls

Signed-off-by: mardyk01 <mark.dykes@arm.com>
Change-Id: Ic093aea69e577a1b678cf572149550881c0791b0
2 files changed