Change mbedtls_rsa_init() signature

Remove padding parameters as mbedtls_rsa_init()
cannot return an error code when padding
parameters are invalid.

Signed-off-by: Ronald Cron <ronald.cron@arm.com>
diff --git a/programs/pkey/rsa_verify.c b/programs/pkey/rsa_verify.c
index 6aca171..0cd17b0 100644
--- a/programs/pkey/rsa_verify.c
+++ b/programs/pkey/rsa_verify.c
@@ -66,7 +66,7 @@
     unsigned char buf[MBEDTLS_MPI_MAX_SIZE];
     char filename[512];
 
-    mbedtls_rsa_init( &rsa, MBEDTLS_RSA_PKCS_V15, 0 );
+    mbedtls_rsa_init( &rsa );
 
     if( argc != 2 )
     {