net: express the first argument to NetSetTimeout() in milliseconds

Enforce millisecond semantics of the first argument to NetSetTimeout() --
the change is transparent for well-behaving boards (CFG_HZ == 1000 and
get_timer() countiing in milliseconds).

Rationale for this patch is to enable millisecond granularity for
network-related timeouts, which is needed for the upcoming automatic
software update feature.

Summary of changes:
- do not scale the first argument to NetSetTimeout() by CFG_HZ
- change timeout values used in the networking code to milliseconds

Signed-off-by: Rafal Czubak <rcz@semihalf.com>
Signed-off-by: Bartlomiej Sieka <tur@semihalf.com>
Signed-off-by: Ben Warren <biggerbadderben@gmail.com>
diff --git a/net/rarp.c b/net/rarp.c
index ecf38e4..7105696 100644
--- a/net/rarp.c
+++ b/net/rarp.c
@@ -31,7 +31,7 @@
 
 #if defined(CONFIG_CMD_NET)
 
-#define TIMEOUT		5UL		/* Seconds before trying BOOTP again */
+#define TIMEOUT		5000UL	/* Milliseconds before trying BOOTP again */
 #ifndef	CONFIG_NET_RETRY_COUNT
 # define TIMEOUT_COUNT	5		/* # of timeouts before giving up  */
 #else
@@ -80,7 +80,7 @@
 		puts ("\nRetry count exceeded; starting again\n");
 		NetStartAgain ();
 	} else {
-		NetSetTimeout (TIMEOUT * CFG_HZ, RarpTimeout);
+		NetSetTimeout (TIMEOUT, RarpTimeout);
 		RarpRequest ();
 	}
 }
@@ -115,7 +115,7 @@
 
 	NetSendPacket(NetTxPacket, (pkt - NetTxPacket) + ARP_HDR_SIZE);
 
-	NetSetTimeout(TIMEOUT * CFG_HZ, RarpTimeout);
+	NetSetTimeout(TIMEOUT, RarpTimeout);
 	NetSetHandler(RarpHandler);
 }