Consolidate strmhz() implementation

ARM, i386, m68k and ppc all have identical implementations of strmhz().
Other architectures don't provide this function at all.

This patch moves strmhz() into lib_generic, reducing code duplication
and providing a more unified API across architectures.

Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>

lib_generic/strmhz.c

@@ -0,0 +1,36 @@
+/*
+ * (C) Copyright 2002-2006
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+#include <common.h>
+
+char *strmhz (char *buf, long hz)
+{
+	long l, n;
+	long m;
+
+	n = hz / 1000000L;
+	l = sprintf (buf, "%ld", n);
+	m = (hz % 1000000L) / 1000L;
+	if (m != 0)
+		sprintf (buf + l, ".%03ld", m);
+	return (buf);
+}