Revert "crypto: api - Disallow identical driver names"

This reverts commit 680eb0a9 which is
commit 27016f75 upstream.

This breaks for devices that use the downstream fips140 module.

Bug: 335718233
Bug: 335830134
Change-Id: Ie465403c40fe75fee5934ea160b86a4c77ef8f17
Signed-off-by: Will McVicker <willmcvicker@google.com>