meta-zaius: Add obmc-console-server baud rate configuration

Add local-tty-baud option to Zaius BMC console configuration, to be
read by obmc-console-server when opening the tty for the local UART
mirroring.

Change-Id: Iae2322b383388d9475e04a6a54ca47563123c812
Signed-off-by: Xo Wang <xow@google.com>
diff --git a/meta-zaius/recipes-phosphor/console/obmc-console/obmc-console.conf b/meta-zaius/recipes-phosphor/console/obmc-console/obmc-console.conf
index 8ad936d..a5ba3f3 100644
--- a/meta-zaius/recipes-phosphor/console/obmc-console/obmc-console.conf
+++ b/meta-zaius/recipes-phosphor/console/obmc-console/obmc-console.conf
@@ -1,3 +1,4 @@
 lpc-address = 0x3f8
 sirq = 4
 local-tty = ttyS0
+local-tty-baud = 115200