Finally retire cmd_confdefs.h and CONFIG_BOOTP_MASK!

All of the choices for CONFIG_BOOTP_ are now documented in
the README file.  You must now individually select exactly
the set that you want using a series of
    #define CONFIG_BOOTP_<x>
statements in the board port config files now.

Signed-off-by: Jon Loeliger <jdl@freescale.com>
diff --git a/net/net.c b/net/net.c
index 1b7b4a8..f96eb28 100644
--- a/net/net.c
+++ b/net/net.c
@@ -110,7 +110,7 @@
 IPaddr_t	NetOurSubnetMask=0;		/* Our subnet mask (0=unknown)	*/
 IPaddr_t	NetOurGatewayIP=0;		/* Our gateways IP address	*/
 IPaddr_t	NetOurDNSIP=0;			/* Our DNS IP address		*/
-#if (CONFIG_BOOTP_MASK & CONFIG_BOOTP_DNS2)
+#if defined(CONFIG_BOOTP_DNS2)
 IPaddr_t	NetOurDNS2IP=0;			/* Our 2nd DNS IP address	*/
 #endif
 char		NetOurNISDomain[32]={0,};	/* Our NIS domain		*/