skiboot v6.3.4 release notes

Signed-off-by: Vasant Hegde <hegdevasant@linux.vnet.ibm.com>
Signed-off-by: Oliver O'Halloran <oohall@gmail.com>

doc/release-notes/skiboot-6.3.4.rst

@@ -0,0 +1,29 @@
+.. _skiboot-6.3.4:
+
+==============
+skiboot-6.3.4
+==============
+
+skiboot 6.3.4 was released on Thursday Oct 3rd, 2019. It replaces
+:ref:`skiboot-6.3.3` as the current stable release in the 6.3.x series.
+
+It is recommended that 6.3.4 be used instead of any previous 6.3.x version
+due to the bug fixes it contains.
+
+Bug fixes included in this release are:
+
+- hw/phb4: Prevent register accesses when in reset
+
+- core/platform: Actually disable fast-reboot on P8
+
+- xive: fix return value of opal_xive_allocate_irq()
+
+- hw/phb4: Use standard MIN/MAX macro definitions
+
+  The max() macro definition incorrectly returns the minimum value.  The
+  max() macro is used to ensure that PERST has been asserted for 250ms and
+  that we wait 100ms seconds for the ETU logic in the CRESET_START PHB4
+  PCI slot state.  However, by returning the minimum value there is no
+  guarantee that either of these requirements are met.
+
+- doc/requirements.txt: pin docutils at 0.14