meta-facebook: yosemitev2 : Add multi-host postcode support

The machine layer changes to configure the phosphor-host-postd to
support multi-host(yosemitev2). The yosemite V2 has 4 hosts.

Tested:
 Tested systemd service for Yosemitev2.
 Tested systemd service for Tiogapass.

Signed-off-by: Kumar Thangavel <thangavel.k@hcl.com>
Change-Id: Ie26b357b6a7d3fe1e9335e43f8564c7ce59b1030
diff --git a/meta-facebook/recipes-phosphor/host/phosphor-host-postd_%.bbappend b/meta-facebook/recipes-phosphor/host/phosphor-host-postd_%.bbappend
new file mode 100644
index 0000000..73b3e1f
--- /dev/null
+++ b/meta-facebook/recipes-phosphor/host/phosphor-host-postd_%.bbappend
@@ -0,0 +1,5 @@
+FILESEXTRAPATHS:prepend := "${THISDIR}/${PN}:"
+
+#Enable multi-host support for yosemitev2 in the phosphor-host-postd
+EXTRA_OEMESON += "-Dhost-instances='${OBMC_HOST_INSTANCES}'"
+EXTRA_OEMESON:append:fb-compute-multihost = " -Dsnoop=enabled"