[dice] Move hash function to the library libdiced_open_dice

This is part of the project of merging the two existing dice
wrapper libraries into one library. The upstream library
libdiced_open_dice will be the merged library.

Test: atest diced_utils_test diced_sample_inputs_test \
diced_test diced_vendor_test diced_open_dice_cbor_test
Test: m pvmfw_img microdroid_manager && atest \
microdroid_manager_test
Bug: 267575445

Change-Id: I43011a5767b5d8547df20290a61c5ff95863980d
5 files changed