x86, efi: fix 32-bit warnings in setup_efi_pci()

Fix four similar build warnings on 32-bit (casts between different
size pointers and integers).

Signed-off-by: Jan Beulich <jbeulich@suse.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Stefan Hasko <hasko.stevo@gmail.com>
Signed-off-by: Matt Fleming <matt.fleming@intel.com>

arch/x86/boot/compressed/eboot.c

@@ -256,10 +256,10 @@ static efi_status_t setup_efi_pci(struct boot_params *params)
 	int i;
 	struct setup_data *data;
 
-	data = (struct setup_data *)params->hdr.setup_data;
+	data = (struct setup_data *)(unsigned long)params->hdr.setup_data;
 
 	while (data && data->next)
-		data = (struct setup_data *)data->next;
+		data = (struct setup_data *)(unsigned long)data->next;
 
 	status = efi_call_phys5(sys_table->boottime->locate_handle,
 				EFI_LOCATE_BY_PROTOCOL, &pci_proto,
@@ -345,9 +345,9 @@ static efi_status_t setup_efi_pci(struct boot_params *params)
 		memcpy(rom->romdata, pci->romimage, pci->romsize);
 
 		if (data)
-			data->next = (uint64_t)rom;
+			data->next = (unsigned long)rom;
 		else
-			params->hdr.setup_data = (uint64_t)rom;
+			params->hdr.setup_data = (unsigned long)rom;
 
 		data = (struct setup_data *)rom;