Revert "PCI: fix kabi change in struct pci_bus"

hulk inclusion
category: bugfix
bugzilla: 30939
CVE: NA

---------------------------

The kabi can be broken before official release.

This reverts commit 8664b79edac95322379eee025763ba0840d458d1.
Signed-off-by: NYang Yingliang <yangyingliang@huawei.com>
Reviewed-By: NXie XiuQi <xiexiuqi@huawei.com>
Signed-off-by: NYang Yingliang <yangyingliang@huawei.com>

include/linux/pci.h

@@ -584,6 +584,7 @@ struct pci_bus {
 	struct resource busn_res;	/* Bus numbers routed to this bus */
 
 	struct pci_ops	*ops;		/* Configuration access functions */
+	struct pci_ops	*backup_ops;
 	struct msi_controller *msi;	/* MSI controller */
 	void		*sysdata;	/* Hook for sys-specific extension */
 	struct proc_dir_entry *procdir;	/* Directory entry in /proc/bus/pci */
@@ -605,11 +606,8 @@ struct pci_bus {
 	struct bin_attribute	*legacy_io;	/* Legacy I/O for this bus */
 	struct bin_attribute	*legacy_mem;	/* Legacy mem */
 	unsigned int		is_added:1;
-#ifndef __GENKSYMS__
-	struct pci_ops	*backup_ops;
-#else
+
 	KABI_RESERVE(1)
-#endif
 	KABI_RESERVE(2)
 	KABI_RESERVE(3)
 	KABI_RESERVE(4)