tests/boot_linux_console: Add a quick test for the OrangePi PC board

tests/boot_linux_console: Add a quick test for the OrangePi PC board

This test boots a Linux kernel on a OrangePi PC board and verify
the serial output is working.

The kernel image and DeviceTree blob are built by the Armbian
project (based on Debian):
https://www.armbian.com/orange-pi-pc/

If ARM is a target being built, "make check-acceptance" will
automatically include this test by the use of the "arch:arm" tags.

Alternatively, this test can be run using:

  $ make check-venv
  $ ./tests/venv/bin/avocado --show=console,app run -t machine:orangepi-pc tests/acceptance/boot_linux_console.py
  JOB ID     : 2e4d15eceb13c33672af406f08171e6e9de1414a
  JOB LOG    : ~/job-results/job-2019-12-17T05.46-2e4d15e/job.log
  (1/1) tests/acceptance/boot_linux_console.py:BootLinuxConsole.test_arm_orangepi:
  console: Uncompressing Linux... done, booting the kernel.
  console: Booting Linux on physical CPU 0x0
  console: Linux version 4.20.7-sunxi (root@armbian.com) (gcc version 7.2.1 20171011 (Linaro GCC 7.2-2017.11)) #5.75 SMP Fri Feb 8 09:02:10 CET 2019
  console: CPU: ARMv7 Processor [410fc075] revision 5 (ARMv7), cr=50c5387d
  console: CPU: div instructions available: patching division code
  console: CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cache
  console: OF: fdt: Machine model: Xunlong Orange Pi PC
  console: Memory policy: Data cache writealloc
  console: OF: reserved mem: failed to allocate memory for node 'cma@4a000000'
  console: cma: Failed to reserve 128 MiB
  console: psci: probing for conduit method from DT.
  console: psci: PSCIv0.2 detected in firmware.
  console: psci: Using standard PSCI v0.2 function IDs
  console: psci: Trusted OS migration not required
  console: random: get_random_bytes called from start_kernel+0x8d/0x3c2 with crng_init=0
  console: percpu: Embedded 18 pages/cpu @(ptrval) s41228 r8192 d24308 u73728
  console: Built 1 zonelists, mobility grouping on.  Total pages: 32480
  console: Kernel command line: printk.time=0 console=ttyS0,115200
  PASS (8.59 s)
  JOB TIME   : 8.81 s

Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Niek Linnenbank <nieklinnenbank@gmail.com>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Tested-by: Alex Bennée <alex.bennee@linaro.org>
Message-id: 20200311221854.30370-14-nieklinnenbank@gmail.com
[NL: rename in commit message Raspbian to Armbian, remove vm.set_machine()]
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>