Move the global `-Wno-format` compiler option to the individual tests
that still trigger Wformat warnings. The majority of the tests now
compile cleanly with `-Wformat` enabled.
Signed-off-by: Sven van Haastregt <sven.vanhaastregt@arm.com>
* Unified common functions tests due to preparation for adding cl_khr_fp16 support
* Renamed base structure, few cosmetic corrections
* Added corrections due to code review
* Removed comment separators
* Added review related corrections