ARM: dts: broadcom: align LED node names with dtschema

The node names should be generic and DT schema expects certain pattern:

  bcm4708-asus-rt-ac68u.dtb: leds: 'logo', 'power', 'usb2', 'usb3' do not match any of the regexes: '(^led-[0-9a-f]$|led)', 'pinctrl-[0-9]+'

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20221125144128.477059-1-krzysztof.kozlowski@linaro.org


Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>