net: cosmetic: Clean up TFTP variables and functions

Make a thorough pass through all variables and function names contained
within tftp and remove CamelCase and improve naming.

Signed-off-by: Joe Hershberger <joe.hershberger@ni.com>
Acked-by: Simon Glass <sjg@chromium.org>
diff --git a/net/tftp.h b/net/tftp.h
index 2b686e3..c411c9b 100644
--- a/net/tftp.h
+++ b/net/tftp.h
@@ -16,14 +16,14 @@
  */
 
 /* tftp.c */
-void TftpStart(enum proto_t protocol);	/* Begin TFTP get/put */
+void tftp_start(enum proto_t protocol);	/* Begin TFTP get/put */
 
 #ifdef CONFIG_CMD_TFTPSRV
-extern void TftpStartServer(void);	/* Wait for incoming TFTP put */
+void tftp_start_server(void);	/* Wait for incoming TFTP put */
 #endif
 
-extern ulong TftpRRQTimeoutMSecs;
-extern int TftpRRQTimeoutCountMax;
+extern ulong tftp_timeout_ms;
+extern int tftp_timeout_count_max;
 
 /**********************************************************************/