op-build v2.0.7 release notes

Signed-off-by: Stewart Smith <stewart@linux.ibm.com>
(cherry picked from commit 4960928ca07ff624f28a7b9b70751cdde52691bb)
Signed-off-by: Stewart Smith <stewart@linux.ibm.com>
diff --git a/doc/release-notes/v2.0.7.rst b/doc/release-notes/v2.0.7.rst
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+Release Notes for OpenPower Firmware v2.0.7
+===========================================
+
+op-build v2.0.6 was released on Friday August 3rd, 2018 and replaces op-build v2.0.6 as the current stable release in
+the 2.0.x series.
+
+It is recommended that v2.0.7 be used over any previous v2.0.x version on POWER9 systems due to the bug fixes contained within.
+
+The only update in this release is to skiboot v6.0.7 to work around a hardware errata in the interrupt controller on POWER9.
+
+The bug fix is:
+
+- xive: Disable block tracker
+
+  Due to some HW errata, the block tracking facility (performance
+  optimisation for large systems) should be disabled on Nimbus chips.
+  Disable it unconditionally for now.