scsi: ufs: Resume ufs host before accessing ufs device

As a part of sysfs reading of descriptors/attributes/flags,
query commands should only be executed when hba's
power runtime status is active.
To guarantee this, add pm_runtime_get/put_sync()
to those paths where query commands are sent.

Change-Id: Ieb924efd3159c7422e50bb69ecf70b369ec72d89
Signed-off-by: Nitin Rawat <nitirawa@codeaurora.org>
Signed-off-by: Asutosh Das <asutoshd@codeaurora.org>