Switch back to using in-tree Palmetto device tree
diff --git a/meta-ibm/meta-palmetto/conf/machine/palmetto.conf b/meta-ibm/meta-palmetto/conf/machine/palmetto.conf
index d57bdcb..f6256a7 100644
--- a/meta-ibm/meta-palmetto/conf/machine/palmetto.conf
+++ b/meta-ibm/meta-palmetto/conf/machine/palmetto.conf
@@ -1,5 +1,5 @@
KMACHINE = "aspeed"
-KERNEL_DEVICETREE = "${MACHINE}.dtb"
+KERNEL_DEVICETREE = "${KMACHINE}-bmc-opp-${MACHINE}.dtb"
require conf/machine/include/ast2400.inc
require conf/machine/include/obmc-bsp-common.inc