ANDROID: GKI: rockchip: Add symbols for r8168

7 function symbol(s) added
  'struct sk_buff * __skb_gso_segment(struct sk_buff *, netdev_features_t, bool)'
  'pci_power_t pci_choose_state(struct pci_dev *, pm_message_t)'
  'void pci_clear_mwi(struct pci_dev *)'
  'int pci_set_mwi(struct pci_dev *)'
  'void * proc_get_parent_data(const struct inode *)'
  'int remove_proc_subtree(const char *, struct proc_dir_entry *)'
  'int skb_checksum_help(struct sk_buff *)'

Bug: 239396464
Signed-off-by: Kever Yang <kever.yang@rock-chips.com>
Signed-off-by: Bian Jin chen <kenjc.bian@rock-chips.com>
Change-Id: Idc06a10cda27d8d6b3de69a79c51cb63bce9d8e1