86xx: Add reginfo command

Signed-off-by: Becky Bruce <becky.bruce@freescale.com>
diff --git a/include/configs/sbc8641d.h b/include/configs/sbc8641d.h
index 1c1e826..1991a8c 100644
--- a/include/configs/sbc8641d.h
+++ b/include/configs/sbc8641d.h
@@ -480,6 +480,7 @@
 #include <config_cmd_default.h>
     #define CONFIG_CMD_PING
     #define CONFIG_CMD_I2C
+    #define CONFIG_CMD_REGINFO
 
 #if defined(CONFIG_PCI)
     #define CONFIG_CMD_PCI