CRIS: add STACKTRACE_SUPPORT

Add stacktrace support, which is required for lockdep and tracing.  The
stack tracing simply looks at all kernel text symbols found on the
stack, similar to the trap stack dumping code, which can also be
converted to use this.

Signed-off-by: Rabin Vincent <rabin@rab.in>
Signed-off-by: Jesper Nilsson <jesper.nilsson@axis.com>
diff --git a/arch/cris/Kconfig b/arch/cris/Kconfig
index e7ba2d4..61f4acc 100644
--- a/arch/cris/Kconfig
+++ b/arch/cris/Kconfig
@@ -40,6 +40,9 @@
 	depends on ETRAX_ARCH_V32
 	def_bool y
 
+config STACKTRACE_SUPPORT
+	def_bool y
+
 config CRIS
 	bool
 	default y