nrf_security: Enable PSA_CRYPTO for NRF_SECURITY

Enable the option PSA_CRYPTO when NRF_SECURITY is enabled.
This will make it possible to select different providers
for PSA crypto APIs, one provider being MbedTLS, another
is TF-M and a custom one could be used as well.

Since nrf_security provides PSA crypto APIs it sets the
custom provider as default.

Signed-off-by: Georgios Vasilakis <[email protected]>

Author: Vge0rge

subsys/nrf_security/Kconfig

@@ -46,6 +46,7 @@ config NRF_SECURITY
 	# CONFIG_TFM_BL2.
 	select TFM_BL2_NOT_SUPPORTED if BUILD_WITH_TFM
 	select PSA_CRYPTO_CLIENT
+	select PSA_CRYPTO
 	help
 	  Set this configuration to enable nRF Security. This provides
 	  Arm PSA cryptography APIs with RNG support (optionally).
@@ -58,6 +59,10 @@ config PSA_PROMPTLESS
 
 if NRF_SECURITY
 
+choice PSA_CRYPTO_PROVIDER
+	default PSA_CRYPTO_PROVIDER_CUSTOM
+endchoice
+
 config MBEDTLS_PSA_CRYPTO_BUILTIN_KEYS
 	bool
 	default y if HAS_HW_NRF_CRACEN && PSA_CRYPTO_DRIVER_CRACEN