ARM: dts: rockchip: rename thermal subnodes for rk3288

ARM: dts: rockchip: rename thermal subnodes for rk3288

A test with the command below gives for example this error:
/arch/arm/boot/dts/rk3288-tinker.dt.yaml:
thermal-zones: 'cpu_thermal', 'gpu_thermal', 'reserve_thermal'
do not match any of the regexes:
'^[a-zA-Z][a-zA-Z0-9\\-]{1,12}-thermal$', 'pinctrl-[0-9]+'

Rename Rockchip rk3288 thermal subnodes
so that it ends with "-thermal"

make ARCH=arm dtbs_check
DT_SCHEMA_FILES=Documentation/devicetree/bindings/
thermal/thermal-zones.yaml

Signed-off-by: Johan Jonker <jbx6244@gmail.com>
Link: https://lore.kernel.org/r/20210117150953.16475-1-jbx6244@gmail.com
Signed-off-by: Heiko Stuebner <heiko@sntech.de>