Blackfin arch: merge kgdb test code using common CONFIG_KGDB_TESTS

[Grace Pan <grace.pan@analog.com>: Add case for kgdb test in l1 and l2]

Signed-off-by: Grace Pan <grace.pan@analog.com>
Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>

diff --git a/arch/blackfin/Kconfig.debug b/arch/blackfin/Kconfig.debug
index bfd712a..c8ff41e 100644
--- a/arch/blackfin/Kconfig.debug
+++ b/arch/blackfin/Kconfig.debug
@@ -19,7 +19,13 @@
 	  This option will slow down process creation somewhat.
 
 config HAVE_ARCH_KGDB
-       def_bool y
+	def_bool y
+
+config KGDB_TESTCASE
+	tristate "KGDB: for test case in expect"
+	default n
+	help
+	  This is a kgdb test case for automated testing.
 
 config DEBUG_VERBOSE
 	bool "Verbose fault messages"