enable mtd character support

target/rb532/kernel.config

@@ -1,7 +1,7 @@
 #
 # Automatically generated make config: don't edit
 # Linux kernel version: 2.6.32
-# Sat Jan 30 22:33:23 2010
+# Mon Feb  1 20:33:44 2010
 #
 CONFIG_MIPS=y
 
@@ -398,7 +398,7 @@ CONFIG_MTD_PARTITIONS=y
 #
 # User Modules And Translation Layers
 #
-# CONFIG_MTD_CHAR is not set
+CONFIG_MTD_CHAR=y
 CONFIG_MTD_BLKDEVS=y
 CONFIG_MTD_BLOCK=y
 # CONFIG_FTL is not set