Add changelog entry

Signed-off-by: Jerry Yu <jerry.h.yu@arm.com>
diff --git a/ChangeLog.d/fix-parllel-cmake-build-fail.txt b/ChangeLog.d/fix-parllel-cmake-build-fail.txt
new file mode 100644
index 0000000..b892eb6
--- /dev/null
+++ b/ChangeLog.d/fix-parllel-cmake-build-fail.txt
@@ -0,0 +1,6 @@
+Bugfix
+   * Fix a build bug : when parallel out-of-box build with cmake, it raise file
+     not found error. That's due to same target is included in different sub-
+     makefiles. And cmake will call the targets in different forked `make`
+     process. As a result, the dependancy will be broken. This fix remove the
+     targets in sub-makefiles and create a global target for it.