ANDROID: usb: host: export xhci symbols for ring management

Export below xhci symbols for vendor modules to manage additional secondary rings.
These will be used to manage the secondary ring for usb audio offload.

xhci_segment_free
    - Free a segment struct.

xhci_link_segments
    - Make the prev segment point to the next segment.

xhci_initialze_ring_info
    - Initialze a ring struct.

xhci_check_trb_in_td_math
    - Check TRB math for validation.

xhci_get_endpoint_address
    - Get endpoint address from endpoint index.

xhci_address_device
    - Issue an address device command

xhci_bus_suspend
xhci_bus_resume
    - Suspend and resume for power scenario

Bug: 183761108
Signed-off-by: Daehwan Jung <dh10.jung@samsung.com>
Change-Id: I2c2d72957214636573ab681ccae0af73b6331b31