random: fenestrasX: Add missing entropy sources

Reviewed by: cem
Fixes: 1492c8c0d qcom_rnd: add initial qualcomm prng driver.
Fixes: 9eecef052 Add an Armv8 rndr random number provider
Fixes: b2f8b2dc8 sys: Add an SMCCC Random Number Generator driver
Differential Revision: https://reviews.freebsd.org/D53292