ARM: dts: rockchip: Fix LED node names on rk3288-phycore-rdk

ARM: dts: rockchip: Fix LED node names on rk3288-phycore-rdk

According to nxp,pca953x.yaml, the pattern for the led names should be:
 "^led-[0-9a-z]+$".

Change it accordingly to fix the following dt-schema warning"

leddimmer@62 (nxp,pca9533): 'led1', 'led2', 'led3', 'led4' do not match any
of the regexes: '^led-[0-9a-z]+$', '^pinctrl-[0-9]+$'

Signed-off-by: Fabio Estevam <festevam@nabladev.com>
Link: https://patch.msgid.link/20260311135604.21634-1-festevam@gmail.com
Signed-off-by: Heiko Stuebner <heiko@sntech.de>