Add macro to simplify iteration for gens, platforms and test configs
Common usage:
1. Write macro "macro_for_each_platform", you can use variables:
GEN_TYPE, GEN_TYPE_LOWER, PLATFORM_IT, PLATFORM_IT_LOWER
2. Write macro "macro_for_each_gen", you can use variables:
GEN_TYPE, GEN_TYPE_LOWER
3. In macro "macro_for_each_gen" call "apply_macro_for_each_platform"
4. Call "apply_macro_for_each_gen" with gen type (SUPPORTED/TESTED)
When needed iterate over test configurations:
1. Write macro "macro_for_each_test_config", you can use variables from
parent macro and SLICES, SUBSLICES and EU_PER_SS
2. In macro "macro_for_each_platform" call "apply_macro_for_each_test_config"
with specified type (AUB_TESTS/MT_TESTS/UNIT_TESTS)
Change-Id: Icd537f409a224a1ffade1874065f8fee66189350
e3b1ba2112