mhi: Export more symbols

Export mhi_device_configure to avoid the following modpost error:

ERROR: "mhi_device_configure" [drivers/bus/mhi/devices/mhi_satellite.ko]
undefined.

Change-Id: Ic0dedbada3dd6d3cd760727fe7076dbcfccdfc93
Signed-off-by: Jordan Crouse <jcrouse@codeaurora.org>
Signed-off-by: Hemant Kumar <hemantk@codeaurora.org>