graphics/darktable: Add llvm:build after compiler:* in USES=
The move of USES+=compiler:* later in the file to be able to check
${ARCH} apparently triggered the following warning:
make: .../Mk/Uses/compiler.mk:86: warning: Command "/usr/local/llvm19/bin/clang --version" exited with status 127 make: .../Mk/Uses/compiler.mk:134: warning: Command "/usr/local/llvm19/bin/clang++ -### /dev/null 2>&1" exited with status 127
It looks like the order of compiler:* and llvm:* is important.
Moving the addition of llvm:compiler after compiler:* was added
conditionally fixes that warning.
PR: 292128
Reported by: Trond Endrestøl <Trond.Endrestol@ximalas.info>
Tested by: Trond Endrestøl <Trond.Endrestol@ximalas.info>,
Herbert J. Skuhra <herbert@gojira.at>