wifi: rtlwifi: Remove unused PCI related defines and struct

The rtlwifi driver comes with a number of PCI related defines that are
unused and many would be provided by PCI core anyway if they'd be
needed again.

Similarly, the struct rtl_pci_capabilities_header is unused and no
driver should come up their own way to access PCI Capabilities anyway.

Remove the unused/duplicated PCI related defines and struct.
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/20231124084725.12738-10-ilpo.jarvinen@linux.intel.com

drivers/net/wireless/realtek/rtlwifi/pci.h

@@ -44,18 +44,6 @@
 #define ATI_DEVICE_ID				0x7914
 #define AMD_VENDOR_ID				0x1022
 
-#define PCI_MAX_BRIDGE_NUMBER			255
-#define PCI_MAX_DEVICES				32
-#define PCI_MAX_FUNCTION			8
-
-#define PCI_CONF_ADDRESS	0x0CF8	/*PCI Configuration Space Address */
-#define PCI_CONF_DATA		0x0CFC	/*PCI Configuration Space Data */
-
-#define PCI_CLASS_BRIDGE_DEV		0x06
-#define PCI_SUBCLASS_BR_PCI_TO_PCI	0x04
-#define PCI_CAPABILITY_ID_PCI_EXPRESS	0x10
-#define PCI_CAP_ID_EXP			0x10
-
 #define U1DONTCARE			0xFF
 #define U2DONTCARE			0xFFFF
 #define U4DONTCARE			0xFFFFFFFF
@@ -113,11 +101,6 @@ enum pci_bridge_vendor {
 	PCI_BRIDGE_VENDOR_MAX,
 };
 
-struct rtl_pci_capabilities_header {
-	u8 capability_id;
-	u8 next;
-};
-
 /* In new TRX flow, Buffer_desc is new concept
  * But TX wifi info == TX descriptor in old flow
  * RX wifi info == RX descriptor in old flow