PCI: dw-rockchip: Move rockchip_pcie_ep_hide_broken_ats_cap_rk3588() to dw_pcie_ep_ops::init()

In the case of PERST# deassert, non-sticky registers will get reset to
their hardware default state and EXT_CAP registers are one among them. But
since the broken ATS cap is hidden only in dw_pcie_ep_ops::pre_init()
callback which is not gettting called during PERST# deassert, it results in
the capability getting advertised again.

So move it to dw_pcie_ep_ops::init() to fix it.

Suggested-by: Niklas Cassel <cassel@kernel.org>
Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com>
[mani: subject and description rewording]
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Tested-by: Niklas Cassel <cassel@kernel.org>
Reviewed-by: Niklas Cassel <cassel@kernel.org>
Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Link: https://patch.msgid.link/1744594109-209312-1-git-send-email-shawn.lin@rock-chips.com

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