[nrf toup][nrfconnect] Fix native tests configuration

Add missing configs.

Signed-off-by: Adrian Gielniewski <adrian.gielniewski@nordicsemi.no>

Author: adigie

src/test_driver/nrfconnect/prj.conf

@@ -40,9 +40,11 @@ CONFIG_MBEDTLS=y
 CONFIG_MBEDTLS_ENABLE_HEAP=y
 CONFIG_MBEDTLS_HEAP_SIZE=65536
 CONFIG_MBEDTLS_SSL_MAX_CONTENT_LEN=768
+CONFIG_MBEDTLS_PSA_KEY_SLOT_COUNT=64
 CONFIG_MBEDTLS_USER_CONFIG_ENABLE=y
 CONFIG_MBEDTLS_USER_CONFIG_FILE="app_mbedtls_config.h"
 CONFIG_MBEDTLS_ENTROPY_POLL_ZEPHYR=y
+CONFIG_MBEDTLS_ENTROPY_C=y
 CONFIG_MBEDTLS_KEY_EXCHANGE_ECDHE_ECDSA_ENABLED=y
 CONFIG_MBEDTLS_PSA_CRYPTO_C=y
 CONFIG_MBEDTLS_MEMORY_DEBUG=y