net: cosmetic: Un-typedef IP_t

Rename IP header related things to IP_UDP. The existing definition
of IP_t includes UDP header, so name it to accurately describe the
structure.

Signed-off-by: Joe Hershberger <joe.hershberger@ni.com>
diff --git a/net/bootp.c b/net/bootp.c
index 0185e56..b8d2760 100644
--- a/net/bootp.c
+++ b/net/bootp.c
@@ -622,7 +622,7 @@
 	/* NetSetIP(pkt, 0xFFFFFFFFL, PORT_BOOTPS, PORT_BOOTPC,
 		sizeof (struct Bootp_t)); */
 	iphdr = pkt;	/* We need this later for NetSetIP() */
-	pkt += IP_HDR_SIZE;
+	pkt += IP_UDP_HDR_SIZE;
 
 	bp = (struct Bootp_t *)pkt;
 	bp->bp_op = OP_BOOTREQUEST;
@@ -807,7 +807,7 @@
 	pkt += NetSetEther(pkt, NetBcastAddr, PROT_IP);
 
 	iphdr = pkt;	/* We'll need this later to set proper pkt size */
-	pkt += IP_HDR_SIZE;
+	pkt += IP_UDP_HDR_SIZE;
 
 	bp = (struct Bootp_t *)pkt;
 	bp->bp_op = OP_BOOTREQUEST;