MLK-19053: crypto: caam: RNG4 TRNG errata

MLK-19053: crypto: caam: RNG4 TRNG errata

  The TRNG as used in RNG4, used in CAAM has a documentation issue. The
 effect is that it is possible that the entropy used to instantiate the
 DRBG may be old entropy, rather than newly generated entropy. There is
 proper programming guidance, but it is not in the documentation.

Signed-off-by: Aymen Sghaier <aymen.sghaier@nxp.com>
(cherry picked from commit 2aff5ffb2c4bb19106f3faa76415b51591cbc2b2)
(cherry picked from commit 051a93febddac7e6fac557b0409203cfefb45b65)
(cherry picked from commit 68cea9fd1df97f2dd48dae0c891325a444458f94)