[sync] sync code from internal

components/libc/sprintf.c

@@ -0,0 +1,25 @@
+#include <stdint.h>
+#include <stdarg.h>
+#include <stddef.h>
+#include <stdio.h>
+
+/**
+ * This function will fill a formatted string to buffer
+ *
+ * @param  buf the buffer to save formatted string.
+ *
+ * @param  format is the format parameters.
+ *
+ * @return The number of characters actually written to buffer.
+ */
+int sprintf(char *buf, const char *format, ...)
+{
+    int32_t n;
+    va_list arg_ptr;
+
+    va_start(arg_ptr, format);
+    n = vsprintf(buf, format, arg_ptr);
+    va_end(arg_ptr);
+
+    return n;
+}