arm64: dts: rockchip: Rely on SoC external pull up on pmic-int-l on Helios64

According to the schematic there is an external pull up, so there is no
need to enable the internal one additionally. Using no pull up matches
the vendor device tree.

Signed-off-by: Uwe Kleine-König <uwe@kleine-koenig.org>
Link: https://lore.kernel.org/r/20210124210328.611707-2-uwe@kleine-koenig.org


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