bdk: util: use volatile base for reg_write_array

bdk/utils/util.c

@@ -195,7 +195,7 @@ int atoi(const char *nptr)
   return (int)strtol(nptr, (char **)NULL, 10);
 }
 
-void reg_write_array(u32 *base, const reg_cfg_t *cfg, u32 num_cfg)
+void reg_write_array(vu32 *base, const reg_cfg_t *cfg, u32 num_cfg)
 {
 	// Expected register offset is a u32 array index.
 	for (u32 i = 0; i < num_cfg; i++)

bdk/utils/util.h

@@ -44,7 +44,7 @@ u64  sqrt64(u64 num);
 long strtol(const char *nptr, char **endptr, register int base);
 int  atoi(const char *nptr);
 
-void reg_write_array(u32 *base, const reg_cfg_t *cfg, u32 num_cfg);
+void reg_write_array(vu32 *base, const reg_cfg_t *cfg, u32 num_cfg);
 u32  crc32_calc(u32 crc, const u8 *buf, u32 len);
 
 int qsort_compare_int(const void *a, const void *b);