Blackfin arch: Add optional verbose debug

Add optional verbose debug - which when turned off, quiets down
userspace errors. Saves ~8k of code/data for production systems
Signed-off-by: NRobin Getz <rgetz@blackfin.uclinux.org>
Signed-off-by: NBryan Wu <cooloney@kernel.org>

arch/blackfin/Kconfig.debug

@@ -5,6 +5,19 @@ source "lib/Kconfig.debug"
 config HAVE_ARCH_KGDB
        def_bool y
 
+config DEBUG_VERBOSE
+	bool "Verbose fault messages"
+	default y
+	select PRINTK
+	help
+	  When a program crashes due to an exception, or the kernel detects
+	  an internal error, the kernel can print a not so brief message
+	  explaining what the problem was. This debugging information is
+	  useful to developers and kernel hackers when tracking down problems,
+	  but mostly meaningless to other people. This is always helpful for
+	  debugging but serves no purpose on a production system.
+	  Most people should say N here.
+
 config DEBUG_MMRS
 	bool "Generate Blackfin MMR tree"
 	select DEBUG_FS