fix missing prototype warnings

watch-library/hpl/core/hpl_core_port.h

@@ -58,4 +58,6 @@ static inline bool _is_in_isr(void)
 
 #endif /* !(defined(__ASSEMBLY__) || defined(__IAR_SYSTEMS_ASM__)) */
 
+void Default_Handler(void);
+
 #endif /* _HPL_CORE_PORT_H_INCLUDED */

watch-library/hpl/gclk/hpl_gclk.c

@@ -33,6 +33,7 @@
  */
 
 #include <hpl_gclk_config.h>
+#include <hpl_gclk_base.h>
 #include <hpl_init.h>
 #include <utils_assert.h>
 

watch-library/hpl/mclk/hpl_mclk.c

@@ -33,6 +33,7 @@
 
 #include <compiler.h>
 #include <hpl_mclk_config.h>
+#include <hpl_init.h>
 
 /**
  * \brief Initialize master clock generator

watch-library/hpl/systick/hpl_systick.c

@@ -34,6 +34,7 @@
 
 #include <hpl_time_measure.h>
 #include <hpl_systick_config.h>
+#include <hpl_delay.h>
 
 /**
  * \brief Initialize system time module