meta-asrock: initial skeleton of X570D4U support

This is a Micro-ATX single-socket AMD X570 server board with an AST2500 BMC.

Change-Id: If9c0cd2c0abfd6d106cdc37e144d71fb72b7cb56
Signed-off-by: Renze Nicolai <renze@rnplus.nl>
diff --git a/meta-asrock/meta-x570d4u/conf/templates/default/local.conf.sample b/meta-asrock/meta-x570d4u/conf/templates/default/local.conf.sample
new file mode 100644
index 0000000..6829912
--- /dev/null
+++ b/meta-asrock/meta-x570d4u/conf/templates/default/local.conf.sample
@@ -0,0 +1,17 @@
+MACHINE ??= "x570d4u"
+DISTRO ?= "openbmc-phosphor"
+PACKAGE_CLASSES ?= "package_ipk"
+SANITY_TESTED_DISTROS:append ?= " *"
+EXTRA_IMAGE_FEATURES = "debug-tweaks"
+USER_CLASSES ?= "buildstats"
+PATCHRESOLVE = "noop"
+BB_DISKMON_DIRS = "\
+    STOPTASKS,${TMPDIR},1G,100K \
+    STOPTASKS,${DL_DIR},1G,100K \
+    STOPTASKS,${SSTATE_DIR},1G,100K \
+    STOPTASKS,/tmp,100M,100K \
+    HALT,${TMPDIR},100M,1K \
+    HALT,${DL_DIR},100M,1K \
+    HALT,${SSTATE_DIR},100M,1K \
+    HALT,/tmp,10M,1K"
+CONF_VERSION = "2"