tests/boot_linux_console: Add a SD card test for the CubieBoard

tests/boot_linux_console: Add a SD card test for the CubieBoard

The kernel image and DeviceTree blob are built by the Armbian
project (based on Debian):
https://docs.armbian.com/Developer-Guide_Build-Preparation/

The cpio image used comes from the linux-build-test project:
https://github.com/groeck/linux-build-test

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:

  $ avocado --show=console run -t machine:cubieboard tests/acceptance/boot_linux_console.py
  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: ahci-sunxi 1c18000.sata: Linked as a consumer to regulator.4
  console: ahci-sunxi 1c18000.sata: controller can't do 64bit DMA, forcing 32bit
  console: ahci-sunxi 1c18000.sata: AHCI 0001.0000 32 slots 1 ports 1.5 Gbps 0x1 impl platform mode
  console: ahci-sunxi 1c18000.sata: flags: ncq only
  console: scsi host0: ahci-sunxi
  console: ata1: SATA max UDMA/133 mmio [mem 0x01c18000-0x01c18fff] port 0x100 irq 27
  console: of_cfs_init
  console: of_cfs_init: OK
  console: vcc3v0: disabling
  console: vcc5v0: disabling
  console: usb1-vbus: disabling
  console: usb2-vbus: disabling
  console: ata1: SATA link up 1.5 Gbps (SStatus 113 SControl 300)
  console: ata1.00: ATA-7: QEMU HARDDISK, 2.5+, max UDMA/100
  console: ata1.00: 40960 sectors, multi 16: LBA48 NCQ (depth 32)
  console: ata1.00: applying bridge limits
  console: ata1.00: configured for UDMA/100
  console: scsi 0:0:0:0: Direct-Access     ATA      QEMU HARDDISK    2.5+ PQ: 0 ANSI: 5
  console: sd 0:0:0:0: Attached scsi generic sg0 type 0
  console: sd 0:0:0:0: [sda] 40960 512-byte logical blocks: (21.0 MB/20.0 MiB)
  console: sd 0:0:0:0: [sda] Write Protect is off
  console: sd 0:0:0:0: [sda] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
  console: sd 0:0:0:0: [sda] Attached SCSI disk
  console: EXT4-fs (sda): mounting ext2 file system using the ext4 subsystem
  console: EXT4-fs (sda): mounted filesystem without journal. Opts: (null)
  console: VFS: Mounted root (ext2 filesystem) readonly on device 8:0.
  [...]
  console: cat /proc/partitions
  console: / # cat /proc/partitions
  console: major minor  #blocks  name
  console: 1        0       4096 ram0
  console: 1        1       4096 ram1
  console: 1        2       4096 ram2
  console: 1        3       4096 ram3
  console: 8        0      20480 sda
  console: reboot
  console: / # reboot
  [...]
  console: sd 0:0:0:0: [sda] Synchronizing SCSI cache
  console: reboot: Restarting system
  PASS (48.39 s)

Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-id: 20191230110953.25496-3-f4bug@amsat.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>