[SCSI] libsas: export sas_find_local_phy function

This is needed by the to be added I_T reset function in aic94xx.  It
needs to know the local phy so it can send a link or hard reset along
the path.

Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
diff --git a/include/scsi/libsas.h b/include/scsi/libsas.h
index 3ffd6b5..39e1cac 100644
--- a/include/scsi/libsas.h
+++ b/include/scsi/libsas.h
@@ -675,5 +675,6 @@
 
 extern void sas_ssp_task_response(struct device *dev, struct sas_task *task,
 				  struct ssp_response_iu *iu);
+struct sas_phy *sas_find_local_phy(struct domain_device *dev);
 
 #endif /* _SASLIB_H_ */