phosphor-software-manager: Enable feature "host bios upgrade"
This commit enables the feature "host bios upgrade" to create BIOS
object on Dbus.
Tested:
```
~# busctl tree xyz.openbmc_project.Software.BMC.Updater | grep /xyz/openbmc_project/software/bios_active
`-/xyz/openbmc_project/software/bios_active
```
Google-Bug-Id: 301014050
Change-Id: I7fc95685da589972eed4a037d8cec4a4b11edb1e
Signed-off-by: Steven Liou <steven.liou@quanta.corp-partner.google.com>
diff --git a/recipes-phosphor/flash/phosphor-software-manager_%.bbappend b/recipes-phosphor/flash/phosphor-software-manager_%.bbappend
new file mode 100644
index 0000000..d6a370d
--- /dev/null
+++ b/recipes-phosphor/flash/phosphor-software-manager_%.bbappend
@@ -0,0 +1,2 @@
+FILES:${PN}-updater += "${systemd_system_unitdir}/obmc-flash-host-bios@.service"
+EXTRA_OEMESON:append:gbmc = " -Dhost-bios-upgrade=enabled"