[assembler] Fix definitions of Andn{l,q}

The result for Andn is not read, so it should only be def and not
use-def.

Bug: 291126189
Test: mm and berberis_host_tests
Change-Id: Ifa8b0c293bf392a081c700d94759f36d8b132bb6
Merged-In: Ifa8b0c293bf392a081c700d94759f36d8b132bb6
2 files changed