microblaze: generic: adding DHCP support

Signed-off-by: Stephan Linz <linz@li-pro.net>
Signed-off-by: Michal Simek <monstr@monstr.eu>

include/configs/microblaze-generic.h

diff --git a/include/configs/microblaze-generic.h b/include/configs/microblaze-generic.h
index 9b1569a..c9ee76e 100644
--- a/include/configs/microblaze-generic.h
+++ b/include/configs/microblaze-generic.h
@@ -231,6 +231,7 @@
 	#undef CONFIG_CMD_NET
 #else
 	#define CONFIG_CMD_PING
+	#define CONFIG_CMD_DHCP
 #endif
 
 #if defined(CONFIG_SYSTEMACE)