Add and export two functions to enable ESI and config ESI base addresses. The calls to these exported functions will be added by the next patch in this series. Change-Id: Icccf24b3a0275f76af63c81f1899c48f8c739cbd Signed-off-by: Can Guo <quic_cang@quicinc.com> Reviewed-by: Bart Van Assche <bvanassche@acm.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com> Bug: 258234315 (cherry picked from commit e02288e0265fe316a16d48ec6dd7b7fd54d66e3e git://git.kernel.org/pub/scm/linux/kernel/git/mkp/scsi.git for-next) Signed-off-by: Bart Van Assche <bvanassche@google.com>