Fix dtschema validator warnings like:
l2-cache-controller@48242000: $nodename:0:
'l2-cache-controller@48242000' does not match '^(cache-controller|cpu)(@[0-9a-f,]+)*$'
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org> Signed-off-by: Tony Lindgren <tony@atomide.com>