ARM: dts: vexpress: add missing cache properties

stable inclusion
from stable-v5.10.185
commit 39eb9eb9ea4339e6e31cc95c09e89151868a76f5
category: bugfix
bugzilla: https://gitee.com/openeuler/kernel/issues/I8L5XP

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=39eb9eb9ea4339e6e31cc95c09e89151868a76f5



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[ Upstream commit 328acc56 ]

As all level 2 and level 3 caches are unified, add required
cache-unified property to fix warnings like:

  vexpress-v2p-ca5s.dtb: cache-controller@2c0f0000: 'cache-unified' is a required property

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20230423150837.118466-1-krzysztof.kozlowski@linaro.org


Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: sanglipeng <sanglipeng1@jd.com>