vold: Adding support of Inline Crypto Engine (ICE)

Storage hardware can have embedded crypto engine which can greatly
reduce degradation in IO performance if crypto operations are performed
on data. Added ICE support to indicate to dm-req-crypt whether ICE is
used.

Change-Id: Ia0b71b1ff8c7e2f700fa863e338294a7ad6094dc
Merge pull request #1 from AOSParadox/LA.BF.1.1.2_rb1.10

vold: Adding support of Inline Crypto Engine (ICE)