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/include/net.h b/include/net.h
index f6f33ff..9671948 100644
--- a/include/net.h
+++ b/include/net.h
@@ -296,7 +296,7 @@
 extern IPaddr_t		NetOurGatewayIP;	/* Our gateway IP addresse	*/
 extern IPaddr_t		NetOurSubnetMask;	/* Our subnet mask (0 = unknown)*/
 extern IPaddr_t		NetOurDNSIP;	 /* Our Domain Name Server (0 = unknown)*/
-#if (CONFIG_BOOTP_MASK & CONFIG_BOOTP_DNS2)
+#if defined(CONFIG_BOOTP_DNS2)
 extern IPaddr_t		NetOurDNS2IP;	 /* Our 2nd Domain Name Server (0 = unknown)*/
 #endif
 extern char		NetOurNISDomain[32];	/* Our NIS domain		*/