ubi: enable error reporting in initialization

The UBI layer will disable much of its error reporting when it is
compiled into the linux kernel to avoid stopping boot.  We want this
error reporting in U-Boot since we don't initialize the UBI layer until
it is used and want the error reporting.

We force this by telling the UBI layer we are building as a module.

Signed-off-by: Andrew Ruder <andrew.ruder@elecsyscorp.com>
Cc: Wolfgang Denk <wd@denx.de>
Cc: Heiko Schocher <hs@denx.de>
Cc: Kyungmin Park <kmpark@infradead.org>

include/ubi_uboot.h

@@ -51,6 +51,14 @@
 
 #undef CONFIG_MTD_UBI_BLOCK
 
+/* ubi_init() disables returning error codes when built into the Linux
+ * kernel so that it doesn't hang the Linux kernel boot process.  Since
+ * the U-Boot driver code depends on getting valid error codes from this
+ * function we just tell the UBI layer that we are building as a module
+ * (which only enables the additional error reporting).
+ */
+#define CONFIG_MTD_UBI_MODULE
+
 #if !defined(CONFIG_MTD_UBI_BEB_LIMIT)
 #define CONFIG_MTD_UBI_BEB_LIMIT	20
 #endif