[fsbl] add fsbl for cv181x/cv180x

Change-Id: I6809bc5016d4bc148f62be2ed3f8e928ec111f19

fsbl/lib/stdlib/misc.c

@@ -0,0 +1,42 @@
+#include <stdint.h>
+#include <ctype.h>
+#include <string.h>
+
+#define MAXNBUF (sizeof(intmax_t) * 8 + 1)
+
+char const hex2ascii_data[] = "0123456789abcdefghijklmnopqrstuvwxyz";
+#define hex2ascii(hex) (hex2ascii_data[hex])
+
+char *ntostr(char *nbuf, uintmax_t num, int _base, int upper)
+{
+	typeof(num) base = (typeof(base))_base;
+	char *p, *q, c;
+
+	p = q = nbuf;
+	*p = '\0';
+
+	do {
+		c = hex2ascii(num % base);
+		*++p = upper ? (char)toupper(c) : c;
+	} while (num /= base);
+
+	while (q < p) {
+		c = *q;
+		*q++ = *p;
+		*p-- = c;
+	}
+
+	return p;
+}
+
+void bytes_reverse(void *buf, size_t n)
+{
+	uint8_t t, *a = buf;
+	int i, j;
+
+	for (i = 0, j = n - 1; i < j; i++, j--) {
+		t = a[i];
+		a[i] = a[j];
+		a[j] = t;
+	}
+}