msm: ice: check for crypto engine availability

There can be many ice instances present in dtsi file but
not all of them will be initialized by storage driver.
Check if crypto instance is initialized before setting
it up for data encryption/decryption usage.

Change-Id: I7c9227007474052513b277dec5963a973781c524
Signed-off-by: Neeraj Soni <neersoni@codeaurora.org>