Single XML package rather than one per platform

This saves us a *lot* of copy&pasted build foo and replaces it with a couple
of config options that can be set in menuconfig.

This makes adding a new platform a much smaller operation, requiring fewer
changes that are scattered throughout the buildroot tree.

Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
diff --git a/openpower/configs/zaius_defconfig b/openpower/configs/zaius_defconfig
index 695fa28..0d49a87 100644
--- a/openpower/configs/zaius_defconfig
+++ b/openpower/configs/zaius_defconfig
@@ -43,7 +43,6 @@
 BR2_HOSTBOOT_CONFIG_FILE="zaius.config"
 BR2_OPENPOWER_PNOR_XML_LAYOUT_FILENAME="defaultPnorLayout_64.xml"
 BR2_OPENPOWER_CONFIG_NAME="zaius"
-BR2_OPENPOWER_XML_PACKAGE="zaius-xml"
 BR2_OPENPOWER_PNOR_FILENAME="zaius.pnor"
 BR2_HOSTBOOT_BINARY_SBE_FILENAME="nimbus_sbe.img.ecc"
 BR2_HOSTBOOT_BINARY_SBEC_FILENAME="centaur_sbec_pad.img.ecc"
@@ -58,7 +57,11 @@
 BR2_SKIBOOT_CUSTOM_VERSION=y
 BR2_SKIBOOT_CUSTOM_VERSION_VALUE="f0ebbc8318e64870a68d337e77b0257678c2b055"
 BR2_PACKAGE_LOADKEYS=y
-BR2_ZAIUS_SYSTEM_XML_FILENAME="ZAIUS_hb.system.xml"
-BR2_ZAIUS_MRW_XML_FILENAME="ZAIUS_hb.mrw.xml"
-BR2_ZAIUS_BIOS_XML_FILENAME="ZAIUS_bios.xml"
+BR2_OPENPOWER_MACHINE_XML_GITHUB_PROJECT=y
+BR2_OPENPOWER_MACHINE_XML_GITHUB_PROJECT_VALUE="zaius-xml"
+BR2_OPENPOWER_MACHINE_XML_VERSION="6bcffcf4b3af8a2de7245c9d6d373b1144bd3037"
+BR2_OPENPOWER_MACHINE_XML_FILENAME="zaius.xml"
+BR2_OPENPOWER_SYSTEM_XML_FILENAME="ZAIUS_hb.system.xml"
+BR2_OPENPOWER_MRW_XML_FILENAME="ZAIUS_hb.mrw.xml"
+BR2_OPENPOWER_BIOS_XML_FILENAME="ZAIUS_bios.xml"
 BR2_IMA_CATALOG_DTS="POWER9"