ARM: dts: rockchip: rename pcfg_* nodenames for rk3066/rk3188

Rename pcfg_* nodenames for rk3066/rk3188 to pcfg-*,
so that they fit in the regex with the other Rockchip SoCs.

Signed-off-by: Johan Jonker <jbx6244@gmail.com>
Link: https://lore.kernel.org/r/20210711112154.5287-1-jbx6244@gmail.com


Signed-off-by: Heiko Stuebner <heiko@sntech.de>