CC3XX: RSA key parsing fix in PSA interface implementation

Make sure that the double pointer used when parsing the DER
encoded RSA keys is correctly handled with proper parentheses
to avoid mistakes.

Signed-off-by: Antonio de Angelis <antonio.deangelis@arm.com>
Change-Id: Ic39a29f927c0cd3de7a90ad62b91ede90f186238
1 file changed