improves bsp of riscv-vp by including init.c

env/riscv_vp/platform.h

@@ -42,6 +42,9 @@
 
 #include <stdint.h>
 
+#define NUM_INTERRUPTS 16
+#define MTIMER_NEXT_TICK_INC 1000
+
 void init_pll(void);
 unsigned long get_cpu_freq(void);
 unsigned long get_timer_freq(void);