op-build update August 12th

Updated hostboot version. Tested on habanero, palmetto, and firestone
HW.
diff --git a/openpower/configs/hostboot/firestone.config b/openpower/configs/hostboot/firestone.config
index b7bc93c..942e242 100755
--- a/openpower/configs/hostboot/firestone.config
+++ b/openpower/configs/hostboot/firestone.config
@@ -29,8 +29,8 @@
 set GPIODD
 set PALMETTO_VDDR
 
-# disable sbe updates
-set NO_SBE_UPDATES
+# Enable SBE updates
+set SBE_UPDATE_INDEPENDENT
 
 unset PCIE_HOTPLUG_CONTROLLER