build.config.*: Link android-mainline kernels with LLD

We've been building mainline x86_64 with LLD for months now, and don't
plan to upgrade Android's binutils to work around issues upstream
related to:

commit c603a309 ("x86/mm: Identify the end of the kernel area to be reserved")

Bug: 138463564
Signed-off-by: Nick Desaulniers <ndesaulniers@google.com>
Signed-off-by: Alistair Delva <adelva@google.com>
Change-Id: Ic52f7f374c494e5d39efb758a7739ebd33799f49