CRIS: Add config for pausing a seg-faulting process

Put it on a wait queue, so we can attach gdb to the process
to debug it instead of just killing it.

Signed-off-by: Jesper Nilsson <jesper.nilsson@axis.com>
diff --git a/arch/cris/Kconfig.debug b/arch/cris/Kconfig.debug
index 0a1d62a..0b9a630 100644
--- a/arch/cris/Kconfig.debug
+++ b/arch/cris/Kconfig.debug
@@ -32,4 +32,10 @@
 	  If the system locks up without any debug information you can say Y
 	  here to make it possible to dump an OOPS with an external NMI.
 
+config NO_SEGFAULT_TERMINATION
+	bool "Keep segfaulting processes"
+	help
+	  Place segfaulting user mode processes on a wait queue instead of
+	  delivering a terminating SIGSEGV to allow debugging with gdb.
+
 endmenu