Add support for block disk encryption

With new file encryption framework the crypto
vops should support crypto configuration for block
disk encryption feature as well.

Add ice.c and ice.h files, Ported and fixed the merged conflicts in
cqhci-crypto-qti.c file. (cherry picked from mainline kernel_msm-4.14
commit: 3317668)

Conflicts:-
drivers/mmc/host/cqhci-crypto-qti.c
drivers/crypto/msm/iceregs.h
drivers/crypto/msm/ice.c

new files added:-
drivers/crypto/msm/iceregs.h
drivers/crypto/msm/ice.c

Validations done:-
1) Device bootup successfully to UI.
2) Unlock device by PIN set on Q build.
3) adb shell getprop ro.crypto.state: encrypted
   adb shell getprop ro.crypto.type: block
4) After OTA check WIFI and BT scanning success.
5) Launch browser and do browsing(success).
6) Settings-> sound -> check the ringtones(old save ringtones retained).

Change-Id: I1504a023f91376b207d9af19ad097405a3a42c85
Signed-off-by: Neeraj Soni <neersoni@codeaurora.org>
Signed-off-by: Jiten Patel <jitepate@codeaurora.org>