devel/llvm-devel: Fix !CLANG plist

llvm-debuginfo-analyzer isn't part of Clang, but was matched by the
overly broad pattern -analyzer.

Reported by: jrtc27
Sponsored by: DARPA, AFRL

(cherry picked from commit 66b3823c32b3a0a1b9afac6a830a37cb8c7760fb)