net: cosmetic: Rename CDPHandler to cdp_receive

This is not called as a handler, so don't name it that way

Signed-off-by: Joe Hershberger <joe.hershberger@ni.com>
diff --git a/net/cdp.c b/net/cdp.c
index 63be570..9bec441 100644
--- a/net/cdp.c
+++ b/net/cdp.c
@@ -245,8 +245,7 @@
 	/* nothing */
 }
 
-void
-CDPHandler(const uchar *pkt, unsigned len)
+void cdp_receive(const uchar *pkt, unsigned len)
 {
 	const uchar *t;
 	const ushort *ss;