meta-evb-ast2600: Add an new convenience layer for OpenBMC AST2600 EVB

This commit has been verified with AST2600A1 EVB with the image created
by the following command:

TEMPLATECONF=meta-evb/meta-evb-aspeed/meta-evb-ast2600/conf . openbmc-env
bitbake obmc-phosphor-image

(From meta-evb rev: 9ec0661731103f703660aa65b5806a126a4f69fb)

Signed-off-by: Troy Lee <troy_lee@aspeedtech.com>
Change-Id: Ie928880ed77ea77cecb33a900092f6ffc5454fb8
Signed-off-by: Andrew Geissler <geissonator@yahoo.com>
diff --git a/meta-evb/meta-evb-aspeed/meta-evb-ast2600/conf/local.conf.sample b/meta-evb/meta-evb-aspeed/meta-evb-ast2600/conf/local.conf.sample
new file mode 100644
index 0000000..ab109b0
--- /dev/null
+++ b/meta-evb/meta-evb-aspeed/meta-evb-ast2600/conf/local.conf.sample
@@ -0,0 +1,21 @@
+MACHINE ??= "evb-ast2600"
+DISTRO ?= "openbmc-phosphor"
+PACKAGE_CLASSES ?= "package_rpm"
+SANITY_TESTED_DISTROS_append ?= " *"
+EXTRA_IMAGE_FEATURES = "debug-tweaks"
+USER_CLASSES ?= "buildstats image-mklibs image-prelink"
+PATCHRESOLVE = "noop"
+BB_DISKMON_DIRS = "\
+    STOPTASKS,${TMPDIR},1G,100K \
+    STOPTASKS,${DL_DIR},1G,100K \
+    STOPTASKS,${SSTATE_DIR},1G,100K \
+    STOPTASKS,/tmp,100M,100K \
+    ABORT,${TMPDIR},100M,1K \
+    ABORT,${DL_DIR},100M,1K \
+    ABORT,${SSTATE_DIR},100M,1K \
+    ABORT,/tmp,10M,1K"
+CONF_VERSION = "1"
+INHERIT += "extrausers"
+EXTRA_USERS_PARAMS = " \
+  usermod -p '\$1\$UGMqyqdG\$FZiylVFmRRfl9Z0Ue8G7e/' root; \
+  "