interface: Add workaround for mbedtls using PSA

Add workaround for mbedtls using PSA.
The MbedTLS library is not compatible with the PSA headers provided
by TF-M. Add prototype of the functions not supported by TF-M to prevent
undefined reference warning. This will still fail at link-time if the
application tries to use the functions.

This commit is temporary until mbedtls and TF-M projects address this
issue.
Mbed-TLS/mbedtls#8602
Fix is in mbed TLS commit:
8f1c36df00f6cdca0ba0bb04a497057c37248017
Could not cherry-picked due to it beeing a merge commit

Signed-off-by: Joakim Andersson <[email protected]>
Signed-off-by: Markus Swarowsky <[email protected]>
Change-Id: I66fcb9d971929f3c21e93c8c3f3c0c666c6563c7
Signed-off-by: Markus Swarowsky <[email protected]>

Author: joerchan

interface/include/psa/crypto_extra.h

@@ -112,6 +112,21 @@ extern "C" {
 #define PSA_ALG_IS_VENDOR_HASH_AND_SIGN(alg)    \
     PSA_ALG_IS_DSA(alg)
 
+/* Workaround for build warnings when MBed TLS has enabled MBEDTLS_USE_PSA_CRYPTO
+ *
+ * Mbed TLS is not compatible with TF-Ms PSA API headers.
+ *
+ * In order to prevent build warnings for the follow functions we add the
+ * prototypes for them here.
+ * If the application tries to link with these functions it will get a link-time
+ * error. This use-case is not supported by TF-M.
+ */
+void psa_set_key_enrollment_algorithm(
+    psa_key_attributes_t *attributes,
+    psa_algorithm_t alg2);
+psa_algorithm_t psa_get_key_enrollment_algorithm(
+    const psa_key_attributes_t *attributes);
+
 /**@}*/
 
 #ifdef __cplusplus