BACKPORT: FROMLIST: scsi: ufs: UFS crypto API

Introduce functions to manipulate UFS inline encryption hardware
in line with the JEDEC UFSHCI v2.1 specification and to work with the
block keyslot manager.

Bug: 137270441
Test: tested as series; see Ie1b77f7615d6a7a60fdc9105c7ab2200d17636a8
Change-Id: I98d2512858a231f11a6bf868198446378d3aa491
Signed-off-by: Satya Tangirala <satyat@google.com>
Link: https://lore.kernel.org/linux-fscrypt/20191028072032.6911-6-satyat@google.com/