arm: multi_v5: enable configs for versatile

Make it possible to boot a versatile machine in qemu.

Boot command:
 /usr/bin/qemu-system-arm -cpu arm926 -machine versatilepb \
  -nographic -nic none -m 256M -monitor none -no-reboot \
  -kernel zImage -dtb versatile-pb.dtb \
  -append "console=ttyAMA0,115200 rootwait root=/dev/vda" \
  -drive armv5_rootfs.ext4,if=none,format=raw,id=hd0 \
  -device virtio-blk-pci,drive=hd0

When doing build and boot testing, it makes more sense to enable arch
vesatile, serial amba_pl011 and virtio (mmio|blk|pci) to
multi_v5_defconfig to make that boot out of the box, with a modern
virtio (mmio|blk|pci) driver. Using the above commandline. Another way
to build and boot would be to use tuxmake/tuxrun. Tuxmake [1] builds the
kernel, and Tuxrun [2] boots the kernel in qemu. Both projects uses
podman to do the build/tests inside.  This makes both project a good
tool to use when finding a regression that you would like someone else
to reproduce with the exact same setup.

tuxmake --runtime podman --target-arch arm \
        --toolchain gcc-11 --kconfig multi_v5_defconfig
tuxrun --tuxmake ~/.cache/tuxmake/builds/3072 --device qemu-armv5

[1] https://tuxmake.org/
[2] https://tuxrun.org/Signed-off-by: NAnders Roxell <anders.roxell@linaro.org>
Link: https://lore.kernel.org/r/20220308121933.3967868-1-anders.roxell@linaro.org'
Signed-off-by: NArnd Bergmann <arnd@arndb.de>

arch/arm/configs/multi_v5_defconfig

@@ -85,6 +85,8 @@ CONFIG_NET_PKTGEN=m
 CONFIG_CFG80211=y
 CONFIG_MAC80211=y
 CONFIG_PCI_MVEBU=y
+CONFIG_ARCH_VERSATILE=y
+CONFIG_PCI_VERSATILE=y
 CONFIG_DEVTMPFS=y
 CONFIG_DEVTMPFS_MOUNT=y
 CONFIG_IMX_WEIM=y
@@ -111,6 +113,9 @@ CONFIG_EEPROM_AT24=y
 # CONFIG_SCSI_PROC_FS is not set
 CONFIG_BLK_DEV_SD=y
 CONFIG_BLK_DEV_SR=m
+CONFIG_VIRTIO_PCI=y
+CONFIG_VIRTIO_MMIO=y
+CONFIG_VIRTIO_BLK=y
 CONFIG_CHR_DEV_SG=m
 CONFIG_ATA=y
 CONFIG_SATA_AHCI=y
@@ -144,6 +149,8 @@ CONFIG_SERIAL_8250_EXTENDED=y
 CONFIG_SERIAL_8250_MANY_PORTS=y
 CONFIG_SERIAL_8250_ASPEED_VUART=m
 CONFIG_SERIAL_OF_PLATFORM=y
+CONFIG_SERIAL_AMBA_PL011=y
+CONFIG_SERIAL_AMBA_PL011_CONSOLE=y
 CONFIG_SERIAL_ATMEL=y
 CONFIG_SERIAL_ATMEL_CONSOLE=y
 CONFIG_SERIAL_ATMEL_TTYAT=y