net: cosmetic: Clean up NFS variables and functions

Make a thorough pass through all variables and function names contained
within nfs.c 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/nfs.h b/net/nfs.h
index 53451db..d69b422 100644
--- a/net/nfs.h
+++ b/net/nfs.h
@@ -69,7 +69,7 @@
 		} reply;
 	} u;
 };
-extern void NfsStart(void);	/* Begin NFS */
+void nfs_start(void);	/* Begin NFS */
 
 
 /**********************************************************************/