samples: tfm_integration: adapt CMakeLists.txt to new TF-M build system

Changes required in TF-M integration samples CMakeLists.txt
files due to the new upstream TF-M build system. In brief,
configuration related to PSA API (IPC), Regression, and
Isolation level needs to be passed, now, directly, not
via invoking a given TF-M CMake configuration.

Signed-off-by: Ioannis Glaropoulos <Ioannis.Glaropoulos@nordicsemi.no>
2 files changed