rand32.h does not make much sense, since the random subsystem
provides more APIs than just getting a random 32 bits value.
Rename it to random.h and get consistently with other
subsystems.
Signed-off-by: Flavio Ceolin <flavio.ceolin@intel.com>
Add a test for `sys_hash32()`. The expectation is that hash
functions should be approximately uniform over a given field.
We can use the Kolmogorov Smirnov test to verify that our
hash function is approximately uniform over a given field.
Signed-off-by: Chris Friedt <cfriedt@meta.com>
