samples: tfm_integration: Enable PSA IPC mode
samples: tfm_integration: Enable PSA IPC mode

Enable PSA IPC mode in psa_level_1 sample.

Signed-off-by: Devaraj Ranganna <53e2fcb007e5c6e2caf46b91114119a655266f64@linaro.org>

galak/zephyr,zephyrproject-rtos/zephyr,zephyrproject-rtos/zephyr,galak/zephyr,galak/zephyr,zephyrproject-rtos/zephyr,finikorg/zephyr,finikorg/zephyr,finikorg/zephyr,galak/zephyr,finikorg/zephyr,galak/zephyr,finikorg/zephyr,zephyrproject-rtos/zephyr,zephyrproject-rtos/zephyr