minor debug cleanups in ./net

Minor ./net cleanups - no functional changes
  - change #ifdef DEBUG printf(); #endif to just debug()
  - changed __FUNCTION__ to __func__
  - got rid of extra whitespace between function and opening brace
  - removed unnecessary braces on if statements

 gcc dead code elimination should make this functionally/size equivalent
 when DEBUG is not defined. (confirmed on Blackfin, with gcc 4.3.3).

 Signed-off-by: Robin Getz <rgetz@blackfin.uclinux.org>

Signed-off-by: Ben Warren <biggerbadderben@gmail.com>

net/rarp.c

@@ -48,9 +48,7 @@ static void
 RarpHandler(uchar * dummi0, unsigned dummi1, unsigned dummi2, unsigned dummi3)
 {
 	char *s;
-#ifdef	DEBUG
-	puts ("Got good RARP\n");
-#endif
+	debug("Got good RARP\n");
 	if ((s = getenv("autoload")) != NULL) {
 		if (*s == 'n') {
 			/*