op-build update Aug 27th

Updated versions: hostboot and firestone-xml.
Removed redundant hostboot patch.
Tested on habanero, palmetto, and firestone HW.  Garrison build only.
diff --git a/openpower/package/firestone-xml/firestone.mk b/openpower/package/firestone-xml/firestone.mk
index 66db0ec..3c85118 100644
--- a/openpower/package/firestone-xml/firestone.mk
+++ b/openpower/package/firestone-xml/firestone.mk
@@ -4,7 +4,7 @@
 #
 ################################################################################
 
-FIRESTONE_XML_VERSION ?= 8765927c10dcf06a8e7ad8c64ddb07f3bb9c9ead
+FIRESTONE_XML_VERSION ?= 9163bac79c29546ff567d958914b52ac308ea4c2
 FIRESTONE_XML_SITE ?= $(call github,open-power,firestone-xml,$(FIRESTONE_XML_VERSION))
 
 FIRESTONE_XML_LICENSE = Apache-2.0