Add support for using the hcode repo

    -Add hcode package to enable compiling hardware
     reference image
    -Modify pnor and sbe makefiles to include a dependency on
     the hcode repository
    -Modify config files so that p9 platfoms use the compiled
     version of the hardware reference image by default
    -Update hostboot-binaries.mk to install the ring images
     to the staging dir

[stewart: remove IBM Austin specific paths, update defconfigs]
Signed-off-by: Stewart Smith <stewart@linux.ibm.com>
diff --git a/openpower/package/sbe/Config.in b/openpower/package/sbe/Config.in
index cd9e84f..c512bbb 100644
--- a/openpower/package/sbe/Config.in
+++ b/openpower/package/sbe/Config.in
@@ -2,5 +2,6 @@
         bool "sbe"
         default y if (BR2_OPENPOWER_PLATFORM && BR2_OPENPOWER_POWER9)
         select BR2_CPP
+        depends on BR2_PACKAGE_HCODE
         help
             Project to build the sbe firmware codebase