tools/lib/: make driver name matching case-sensitive and lower-case names

Case-sensitive is the Unix way, and so is avoiding unnecessary upper-case.

- atben.c (atben_driver): changed name from "Ben" to "ben"
- atusb.c (atusb_driver): changed name from "USB" to "usb"
- atrf.c (select_driver): made driver name matching case-sensitive

tools/lib/atben.c

@@ -355,7 +355,7 @@ static int atben_interrupt(void *handle)
 
 
 struct atrf_driver atben_driver = {
-	.name		= "Ben",
+	.name		= "ben",
 	.open		= atben_open,
 	.close		= atben_close,
 	.reset		= NULL,

tools/lib/atrf.c

@@ -14,7 +14,6 @@
 #include <stdlib.h>
 #include <stdio.h>
 #include <string.h>
-#include <strings.h> /* for strcasecmp */
 
 #include "at86rf230.h"
 
@@ -120,7 +119,7 @@ static const struct atrf_driver *select_driver(const char *arg,
 		end = strchr(arg, 0);
 	len = arg-end;
 	for (drv = drivers; *drv; drv++)
-		if (!strncasecmp((*drv)->name, arg, len) &&
+		if (!strncmp((*drv)->name, arg, len) &&
 		    strlen((*drv)->name) == len)
 			break;
 	if (!*drv) {

tools/lib/atusb.c

@@ -273,7 +273,7 @@ static int atusb_set_clkm(void *dsc, int mhz)
 
 
 struct atrf_driver atusb_driver = {
-	.name		= "USB",
+	.name		= "usb",
 	.open		= atusb_open,
 	.close		= atusb_close,
 	.error		= atusb_error,