ARM: dts: Hurricane 2: Fix NAND nodes names

[ Upstream commit a4528d9029e2eda16e4fc9b9da1de1fbec10ab26 ]

This matches nand-controller.yaml requirements.

Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>