sunxi: kconfig: Add top-level ARCH_SUNXI

And make TARGET_SUN[457]I a choice variable under this.

configs updated with:
    sed -i -e 's/^\+S:CONFIG_TARGET_SUN.I=y/+S:CONFIG_ARCH_SUNXI=y\n&/g' configs/*

Signed-off-by: Ian Campbell <ijc@hellion.org.uk>
[hdegoede@redhat.com: rebase, s/TARGET_SUNXI/ARCH_SUNXI/]
Acked-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
sun7i: Drop CONFIG_ARMV7_PSCI_NR_CPUS

It is not used anywhere.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
ARM: Add arch/arm/cpu/armv7/Kconfig with non-secure and virt options

Add arch/arm/cpu/armv7/Kconfig with non-secure and virt options, so that
we can have CONFIG_ARMV7_SEC_BY_DEFAULT as a proper Kconfig option.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
wip

Signed-off-by: Hans de Goede <hdegoede@redhat.com>