boot/optee-os: bump to version 3.17.0

Bump OP-TEE OS package version to OP-TEE release 3.17.0.

Cc: Clément Léger <clement.leger@bootlin.com>
Signed-off-by: Etienne Carriere <etienne.carriere@linaro.org>
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>