PSA: allow the configuration to favor HMAC_DRBG

Allow the user to configure PSA to use HMAC_DRBG even if CTR_DRBG is
available, or to explicitly select the hash algorithm to use for
HMAC_DRBG, by setting MBEDTLS_PSA_HMAC_DRBG_MD_TYPE in config.h.

Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
diff --git a/programs/test/query_config.c b/programs/test/query_config.c
index 05a953c..1fb7384 100644
--- a/programs/test/query_config.c
+++ b/programs/test/query_config.c
@@ -2616,6 +2616,14 @@
     }
 #endif /* MBEDTLS_PLATFORM_NV_SEED_WRITE_MACRO */
 
+#if defined(MBEDTLS_PSA_HMAC_DRBG_MD_TYPE)
+    if( strcmp( "MBEDTLS_PSA_HMAC_DRBG_MD_TYPE", config ) == 0 )
+    {
+        MACRO_EXPANSION_TO_STR( MBEDTLS_PSA_HMAC_DRBG_MD_TYPE );
+        return( 0 );
+    }
+#endif /* MBEDTLS_PSA_HMAC_DRBG_MD_TYPE */
+
 #if defined(MBEDTLS_SSL_CACHE_DEFAULT_TIMEOUT)
     if( strcmp( "MBEDTLS_SSL_CACHE_DEFAULT_TIMEOUT", config ) == 0 )
     {