libckteec: sync with pkcs11 ta api for sign/verify

Sync with PKCS11 TA API update from [1] for signing and verification
related commands.

Link: [1] https://github.com/OP-TEE/optee_os/pull/4193



Co-developed-by: Etienne Carriere <etienne.carriere@linaro.org>
Signed-off-by: Etienne Carriere <etienne.carriere@linaro.org>
Signed-off-by: Ruchika Gupta <ruchika.gupta@linaro.org>
Reviewed-by: Ricardo Salveti <ricardo@foundries.io>