Revert "C2SoftDav1dDec: Replace memcpy with dav1d_data_wrap"

This reverts commit 6c41740d.

Reason: Current implementation doesn't utilitize frame parallel
multi-threading effectively. Hence reverting to memcpy for now.
This will be revisited once frame parallel multi-threading is
enabled.

Bug: 286852962
Test: Builds
Change-Id: I296fd6d533a40d6de8a7f287c9187a91554f7d7d