caam_rng_init
int caam_rng_init(struct device *ctrldev);
devres_release_group(ctrldev, caam_rng_init);
if (!devres_open_group(ctrldev, caam_rng_init, GFP_KERNEL))
devres_close_group(ctrldev, caam_rng_init);
int caam_rng_init(struct device *dev);
jrpriv->hwrng = !caam_rng_init(dev);
jrpriv->hwrng = !caam_rng_init(dev->parent);