meta-ampere: mtmitchell: Support host consoles logger

This commit supports phosphor-hostlogger in STREAM mode, to forward
the byte stream from obmc-console to rsyslog via the imuxsock module.
The logs can be obtained in /var/log/. The logs are rotated by
logrotate. The size threshold of cpu console is 256KB and the others are
64KB. Each log is polled every 1 minute to check if its file size
exceeds the threshold to rotate it to the new file. Each console can be
saved in up to 2 log files.

Tested (CPU console):

1. Change the mux of CPU console to BMC
    $ ampere_uartmux_ctrl.sh 1 2
2. Connect to CPU SOL console
     $ ssh root@<BMC_IP> -p 2200
3. Execute commands in the CPU SOL console
    => The console output on CPU SOL console will all be logged to
       /var/log/obmc-console-cpu.log
    => The log will be rotated to /var/log/obmc-console-cpu.log.1 if the
        original log file size exceeds 256KB every 1min poll

Signed-off-by: Chau Ly <chaul@amperecomputing.com>
Change-Id: I336bde09c4ef61ea68e05bef2c0b4e4298ea7959
diff --git a/meta-ampere/meta-mitchell/recipes-phosphor/console/obmc-console/obmc-console-server-setup.sh b/meta-ampere/meta-mitchell/recipes-phosphor/console/obmc-console/obmc-console-server-setup.sh
index 763161a..946c92b 100644
--- a/meta-ampere/meta-mitchell/recipes-phosphor/console/obmc-console/obmc-console-server-setup.sh
+++ b/meta-ampere/meta-mitchell/recipes-phosphor/console/obmc-console/obmc-console-server-setup.sh
@@ -1,5 +1,6 @@
 #!/bin/sh -e
 
+# shellcheck disable=SC3010
 
 tty="$1"
 uart=0
@@ -13,6 +14,10 @@
  ;;
  "ttyS3") uart=4
  ;;
+ "ttyS7") uart=0
+ ;;
+ "ttyS8") uart=0
+ ;;
  *) echo "Invalid tty passed to $0. Exiting!"
     exit 1;
  ;;
@@ -22,6 +27,9 @@
 # This allows the SoL console in webui, and the ssh port 2200, to work
 # upon startup. If UART transcievers are installed on the header and required,
 # this value should be set to 1
-/usr/sbin/ampere_uartmux_ctrl.sh ${uart} 2
+if [[ ${uart} -ne 0 ]]
+then
+	/usr/sbin/ampere_uartmux_ctrl.sh ${uart} 2
+fi
 
 /usr/sbin/obmc-console-server --config /etc/obmc-console/server."${tty}".conf "${tty}"