arm64: dts: rockchip: add PCIe3 support on rk3588-jaguar

arm64: dts: rockchip: add PCIe3 support on rk3588-jaguar

The Jaguar SBC provides an M.2 slot connected to the pcie3 controller.
In contrast to a number of other boards the pcie-refclk is gpio-controlled,
so the necessary clock and is added to the list of pcie3 clocks.

Signed-off-by: Heiko Stuebner <heiko.stuebner@cherry.de>
Reviewed-by: Quentin Schulz <quentin.schulz@theobroma-systems.com>
Link: https://lore.kernel.org/r/20240423074956.2622318-1-heiko@sntech.de
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
[ upstream commit: 0ec7e1096332bc2b9bc881c21cfd234058f747b3 ]

(cherry picked from commit 76a89655ae740dddb57187b5b52071ed99187452)
Tested-by: Heiko Stuebner <heiko@sntech.de>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>