git: e6df1a75c40c..7f920884cd00 - vendor/llvm-project/main - vendor branch updated

From: Dimitry Andric <dim_at_FreeBSD.org>
Date: Tue, 09 Dec 2025 14:03:39 UTC
The branch vendor/llvm-project/main has been updated by dim:

URL: https://cgit.FreeBSD.org/src/log/?id=e6df1a75c40c..7f920884cd00

7f920884cd00 Adjust vendor import of llvm-project main llvmorg-21-init-19288-gface93e724f4: add more items to the libc/ top-level directory.