meta-bletchley: phosphor-network: temporary revert SRCREV

Temporary revert phosphor-network SRCREV back to the commit sync-mac
feature still working.

Tesed result:
```
root@bletchley:~# journalctl -u xyz.openbmc_project.Network
Jan 09 05:01:04 bletchley systemd[1]: Starting Phosphor Network Manager...
Jan 09 05:01:05 bletchley phosphor-network-manager[539]: Force sync enabled, check VPD for MAC
Jan 09 05:01:08 bletchley systemd[1]: Started Phosphor Network Manager.
Jan 09 05:01:09 bletchley phosphor-network-manager[539]: Refreshing the objects.
Jan 09 05:01:09 bletchley phosphor-network-manager[539]: Unable to get the value of Network[DHCP] from /etc/systemd/network/00-bmc-eth0.network
Jan 09 05:01:09 bletchley phosphor-network-manager[539]: Unable to get the value of Network[IPv6AcceptRA] from /etc/systemd/network/00-bmc-eth0.network
Jan 09 05:01:16 bletchley phosphor-network-manager[539]: Unable to get the value of DHCP[UseDNS] from /etc/systemd/network/00-bmc-lo.network
Jan 09 05:01:16 bletchley phosphor-network-manager[539]: Unable to get the value of DHCP[UseNTP] from /etc/systemd/network/00-bmc-lo.network
Jan 09 05:01:16 bletchley phosphor-network-manager[539]: Unable to get the value of DHCP[UseHostname] from /etc/systemd/network/00-bmc-lo.network
Jan 09 05:01:16 bletchley phosphor-network-manager[539]: Unable to get the value of DHCP[SendHostname] from /etc/systemd/network/00-bmc-lo.network
Jan 09 05:01:16 bletchley phosphor-network-manager[539]: Refreshing complete.
Jan 09 05:01:16 bletchley phosphor-network-manager[539]: Wrote networkd file: /etc/systemd/network/00-bmc-eth0.network
Jan 09 05:01:17 bletchley phosphor-network-manager[539]: Set the MAC on
Jan 09 05:01:17 bletchley phosphor-network-manager[539]: Removing the match for ethernet interfaces
Jan 09 05:01:19 bletchley phosphor-network-manager[539]: Sending networkd reload
Jan 09 05:01:19 bletchley phosphor-network-manager[539]: Done networkd reload
root@bletchley:~# busctl introspect xyz.openbmc_project.Inventory.Manager /xyz/openbmc_project/inventory/system/chassis/bmc/ethernet xyz.openbmc_project.Inventory.Item.NetworkInterface
NAME                                                TYPE      SIGNATURE RESULT/VALUE   FLAGS
.MACAddress                                         property  s         "C01850F1D796" emits-change writable
root@bletchley:~# ifconfig eth0
eth0      Link encap:Ethernet  HWaddr C0:18:50:F1:D7:96
          inet addr:10.10.11.126  Bcast:10.10.255.255  Mask:255.255.0.0
          inet6 addr: 2019:7::c218:50ff:fef1:d796/64 Scope:Global
          inet6 addr: fe80::c218:50ff:fef1:d796/64 Scope:Link
          inet6 addr: 2018:5::c9d3/128 Scope:Global
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:98845 errors:0 dropped:30955 overruns:0 frame:0
          TX packets:267 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:9565630 (9.1 MiB)  TX bytes:32516 (31.7 KiB)
          Interrupt:34
```

Signed-off-by: Potin Lai <potin.lai@quantatw.com>
Change-Id: Ie32fd892a711f74a52f3a51e9e20634f69c416e7
diff --git a/meta-facebook/meta-bletchley/recipes-phosphor/network/phosphor-network_%.bbappend b/meta-facebook/meta-bletchley/recipes-phosphor/network/phosphor-network_%.bbappend
index 5950888..9b96b1d 100644
--- a/meta-facebook/meta-bletchley/recipes-phosphor/network/phosphor-network_%.bbappend
+++ b/meta-facebook/meta-bletchley/recipes-phosphor/network/phosphor-network_%.bbappend
@@ -1,5 +1,7 @@
 FILESEXTRAPATHS:prepend := "${THISDIR}/${PN}:"
 
+SRCREV = "ef2b28ee4699abaa2770bb333cd889b7f71e2e45"
+
 PACKAGECONFIG:append = " sync-mac"
 
 EXTRA_OEMESON = "-Dforce-sync-mac=true"