perf utils: Move perf_config using routines from color.c to separate object

perf utils: Move perf_config using routines from color.c to separate object

To untangle objects a bit more, avoiding rebuilding the color_fprintf
routines when changes are made to the perf config headers.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Hendrik Brueckner <brueckner@linux.ibm.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Thomas Richter <tmricht@linux.ibm.com>
Link: https://lkml.kernel.org/n/tip-8qvu2ek26antm3a8jyl4ocbq@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>