PCI: exynos: Adapt to use bulk clock APIs

There is no need to hardcode the clock info in the driver as driver can
rely on the devicetree to supply the clocks required for the functioning
of the peripheral.

Thus, remove the static clock info and obtain the platform supplied
clocks. All the clocks supplied are obtained and enabled using the
devm_clk_bulk_get_all_enable() API.

[kwilczynski: commit log]
Link: https://lore.kernel.org/linux-pci/20240220084046.23786-3-shradha.t@samsung.com


Signed-off-by: Shradha Todi <shradha.t@samsung.com>
Signed-off-by: Krzysztof Wilczyński <kwilczynski@kernel.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Alim Akhtar <alim.akhtar@samsung.com>
Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>