hostap: Kconfig: Fix PSA dependency on random numbers

Fix PSA dependency on random number support.
Random number generated is wanted, instead of a specific PRNG algorithm.

Signed-off-by: Joakim Andersson <joakim.andersson@nordicsemi.no>
Signed-off-by: Jukka Rissanen <jukka.rissanen@nordicsemi.no>