test(fuzz): Capability for random inputs

Adding model for random inputs to SMC calls using a
constraint mechanism with a multi tiered sanity
metric.

Change-Id: Ia750fa57359baa424f1af273ba24483ae7330c38
Signed-off-by: Mark Dykes <mark.dykes@arm.com>
diff --git a/.gitignore b/.gitignore
index 708900d..7548ec2 100644
--- a/.gitignore
+++ b/.gitignore
@@ -12,3 +12,8 @@
 # Ignore build directory and binary files
 build/
 *.bin
+
+# Ignore the generated fuzzing files
+arg_struct_def.h
+field_specification.h
+fuzz_names.h