Add previously undefined constants

os/common/startup/RISCV-ECLIC/devices/GD32VF103/eclic_parameters.h

@@ -1,8 +1,6 @@
 /*
     ChibiOS - Copyright (C) 2021 Stefan Kerkmann
 
-
-
     Licensed under the Apache License, Version 2.0 (the "License");
     you may not use this file except in compliance with the License.
     You may obtain a copy of the License at
@@ -27,6 +25,10 @@
 #ifndef _ECLIC_PARAMETERS_H_
 #define _ECLIC_PARAMETERS_H_
 
+/* Not defined because FPU isn't present. GCC produces alot 
+of warnings if -Wundef is present, therefore this define. */
+#define __riscv_flen 0
+
 #include "gd32vf103.h"
 
 #endif /* _ECLIC_PARAMETERS_H_ */

os/hal/ports/GD/GD32VF103/hal_lld.h

@@ -265,6 +265,8 @@
 #define GD32_PREDV0SEL_PLL1   (1 << 16)   /**< PREDV0 source is PLL1.    */
 /** @} */
 
+#define GD32_PLLMF_VALUE_6P5 65
+
 /*===========================================================================*/
 /* Platform capabilities.                                                    */
 /*===========================================================================*/