package/optee-test: bump to version 3.9.0

package/optee-test: bump to version 3.9.0

Bump OP-TEE Test package version to OP-TEE release 3.9.0.

Drop patch on scripts/file_to_c.py that is merged in 3.9.0.
Add patch from [1] for related issue found in 3.9.0 xtest tool.
Add patch to default disable xtest regression test 1027 and 1028 that
mandate changes in Linux kernel OP-TEE driver that are not available
in mainline, at least as of Linux kernel v5.7.

[1] https://github.com/OP-TEE/optee_test/commit/e1af176af2bb274745e9b0d43456763f8946f107

Signed-off-by: Etienne Carriere <etienne.carriere@linaro.org>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>