Bump blackbird-xml to match Raptor 2.00 build

Raptor Engineering Development Team (2):
      Update MVPD to fix 2666MHz operation on single drop DDR designs with short nets
      Remove 2666MHz memory restriction due to MVPD update

Timothy Pearson (1):
      Set PCIe max power attribute for each slot

Signed-off-by: Stewart Smith <stewart@flamingspork.com>
diff --git a/openpower/configs/blackbird_defconfig b/openpower/configs/blackbird_defconfig
index 3fd9455..daa1fe0 100644
--- a/openpower/configs/blackbird_defconfig
+++ b/openpower/configs/blackbird_defconfig
@@ -49,7 +49,7 @@
 BR2_OPENPOWER_POWER9=y
 BR2_HOSTBOOT_CONFIG_FILE="blackbird.config"
 BR2_OPENPOWER_MACHINE_XML_GITHUB_PROJECT_VALUE="blackbird-xml"
-BR2_OPENPOWER_MACHINE_XML_VERSION="17e9e84d504582c881e480b82fe1cf115312130f"
+BR2_OPENPOWER_MACHINE_XML_VERSION="e782e30829e0d6bea1018740d695633c29f53e75"
 BR2_OPENPOWER_MACHINE_XML_FILENAME="blackbird.xml"
 BR2_OPENPOWER_SYSTEM_XML_FILENAME="BLACKBIRD_hb.system.xml"
 BR2_OPENPOWER_MRW_XML_FILENAME="BLACKBIRD_hb.mrw.xml"