modules: mbedtls: split Mbed TLS and TF-PSA-Crypto configuration files

TF-PSA-Crypto now requires a different configuration header file compared
to Mbed TLS. This commit adds 2 files:
- Kconfig.tf-psa-crypto
- config-tf-psa-crypto.h
which behave exactly the same as for their Mbed TLS counterparts, but for
TF-PSA-Crypto.

Kconfigs and #defines were migrated from Mbed TLS to TF-PSA-Crypto. This
commit didn't implement any re-organization/cleanup/change, but it's just
moving lines between files.

Signed-off-by: Valerio Setti <vsetti@baylibre.com>

Author: valeriosetti

modules/mbedtls/Kconfig

@@ -61,7 +61,17 @@ config MBEDTLS_CFG_FILE
 	  special TLS usage, use available Kconfig options, or select an
 	  alternative config.
 
+config TF_PSA_CRYPTO_CFG_FILE
+	string "TF-PSA-Crypto configuration file"
+	depends on MBEDTLS_BUILTIN
+	default "config-tf-psa-crypto.h"
+	help
+	  Use the default TF-PSA-Crypto configuration header file provided by
+	  Zephyr. In this header file all the features are selected by means
+	  of Kconfigs.
+
 rsource "Kconfig.mbedtls"
+rsource "Kconfig.tf-psa-crypto"
 rsource "Kconfig.ciphersuites"
 rsource "Kconfig.deprecated"