net: tftpput: Support selecting get/put for tftp

TftpStart should support starting either a get or a put.

Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/net/bootp.c b/net/bootp.c
index 73470f2..b703f42 100644
--- a/net/bootp.c
+++ b/net/bootp.c
@@ -165,7 +165,7 @@
 		}
 #endif
 	}
-	TftpStart();
+	TftpStart(TFTPGET);
 }
 
 #if !defined(CONFIG_CMD_DHCP)
diff --git a/net/tftp.c b/net/tftp.c
index 6d46bbb..7e3bb3d 100644
--- a/net/tftp.c
+++ b/net/tftp.c
@@ -595,8 +595,7 @@
 }
 
 
-void
-TftpStart(void)
+void TftpStart(enum proto_t protocol)
 {
 	char *ep;             /* Environment pointer */
 
diff --git a/net/tftp.h b/net/tftp.h
index 3abdf7b..c51aa25 100644
--- a/net/tftp.h
+++ b/net/tftp.h
@@ -16,7 +16,7 @@
  */
 
 /* tftp.c */
-extern void	TftpStart (void);	/* Begin TFTP get */
+void TftpStart(enum proto_t protocol);	/* Begin TFTP get/put */
 
 #ifdef CONFIG_CMD_TFTPSRV
 extern void	TftpStartServer(void);	/* Wait for incoming TFTP put */