ANDROID: GKI: update pixel symbol list for xhci

Pixel is using these symbols in its USB driver implementation.

3 function symbol(s) added
  'int xhci_address_device(struct usb_hcd*, struct usb_device*)'
  'int xhci_bus_resume(struct usb_hcd*)'
  'int xhci_bus_suspend(struct usb_hcd*)'

Bug: 277396090
Bug: 287008367
Bug: 295470667
(cherry picked from commit 64787ee4)
[AD: also update android/abi_gki_aarch64.stg as that was updated
differently on the main ACK branch]
Change-Id: Id89097ab094e0582560383793c91278c88cb078f
Signed-off-by: André Draszik <draszik@google.com>