PCI: iproc: Fix -Wvoid-pointer-to-enum-cast warning

When building with clang 18, the following warning will be reported:

  drivers/pci/controller/pcie-iproc-platform.c:54:15: warning: cast to smaller integer type 'enum iproc_pcie_type' from 'const void *' [-Wvoid-pointer-to-enum-cast]
     55 |         pcie->type = (enum iproc_pcie_type) of_device_get_match_data(dev);

To fix this issue, cast the data the of_device_get_match_data() helper
returns to uintptr_t rather than the iproc_pcie_type enum.

[kwilczynski: commit log]
Link: https://lore.kernel.org/linux-pci/20231220053829.1921187-6-yoshihiro.shimoda.uh@renesas.com
Link: ClangBuiltLinux#1910
Reported-by: Nathan Chancellor <nathan@kernel.org>
Signed-off-by: Justin Stitt <justinstitt@google.com>
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: Krzysztof Wilczyński <kwilczynski@kernel.org>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>

Author: JustinStitt

drivers/pci/controller/pcie-iproc-platform.c

@@ -52,7 +52,7 @@ static int iproc_pltfm_pcie_probe(struct platform_device *pdev)
 	pcie = pci_host_bridge_priv(bridge);
 
 	pcie->dev = dev;
-	pcie->type = (enum iproc_pcie_type) of_device_get_match_data(dev);
+	pcie->type = (uintptr_t)of_device_get_match_data(dev);
 
 	ret = of_address_to_resource(np, 0, &reg);
 	if (ret < 0) {