Fix build errors and warnings / code cleanup.

Signed-off-by: Wolfgang Denk <wd@denx.de>
diff --git a/include/configs/GEN860T.h b/include/configs/GEN860T.h
index d88124a..bfbf3a8 100644
--- a/include/configs/GEN860T.h
+++ b/include/configs/GEN860T.h
@@ -248,7 +248,7 @@
 #endif
 
 #ifdef CONFIG_POST
-u #define CONFIG_CMD_DIAG
+#define CONFIG_CMD_DIAG
 #endif
 
 /*