ARM: dts: qcom: add ufs_ice instance to UFS for msm8994

MSM8994 has an In-line Cryptographic Engine (ICE) dedicated
for UFS. This patch adds an instance of ICE device node to UFS node.

Using ICE helps us avoid throughput degradation while performing
encryption/decryption operations during read and write transaction.

Change-Id: I57013d6130b62da201923d7fd7d28f54497ad0f6
Signed-off-by: Noa Rubens <noag@codeaurora.org>
Signed-off-by: Yaniv Gardi <ygardi@codeaurora.org>
Signed-off-by: Maya Erez <merez@codeaurora.org>