strmhz(): Round numbers when printing clock frequencies

Round clock frequencies for printing.

Many boards printed off clock frequencies like 399 MHz instead of the
exact 400 MHz because numberes were not rounded. This is fixed now.

Signed-off-by: Wolfgang Denk <wd@denx.de>

lib_generic/strmhz.c

@@ -27,9 +27,11 @@ char *strmhz (char *buf, long hz)
 	long l, n;
 	long m;
 
-	n = hz / 1000000L;
+	n = DIV_ROUND(hz, 1000000L);
 	l = sprintf (buf, "%ld", n);
-	m = (hz % 1000000L) / 1000L;
+
+	hz -= n * 1000000L;
+	m = DIV_ROUND(hz, 1000L);
 	if (m != 0)
 		sprintf (buf + l, ".%03ld", m);
 	return (buf);