Add test case to skip list.

Add 'Verify_Channel_Checkstop_Through_OS_With_Auto_Reboot' as it is NA.

Resolves openbmc/openbmc-test-automation#911

Change-Id: Ibd19ef449a80acc603660a5dac2a0c374d93fbca
Signed-off-by: Sweta Potthuri <spotthur@in.ibm.com>
diff --git a/test_lists/skip_test_witherspoon b/test_lists/skip_test_witherspoon
index 4ebefb2..645e4d4 100644
--- a/test_lists/skip_test_witherspoon
+++ b/test_lists/skip_test_witherspoon
@@ -30,3 +30,5 @@
 -e Clock_Time
 # https://github.com/openbmc/openbmc-test-automation/issues/874
 -e User_Management
+# NA test case for Witherspoon
+-e Verify_Channel_Checkstop_Through_OS_With_Auto_Reboot