feat(cts): Enable FP6/FP4 CAST_FROM_BLOCK_SCALED
- Generate tests with data from FP6E2M3, FP6E3M2 and FP4E2M1
- Add some utilities covering these types to tosa_utils.py
Signed-off-by: Ian Tayler Lessa ian.taylerlessa@arm.com
Signed-off-by: Ian Tayler Lessa ian.taylerlessa@arm.com