util: automake: beautify sources list

Remove trailing tabs and sort alphabetically.

Signed-off-by: Emil Velikov <emil.l.velikov@gmail.com>
Acked-by: Vedran Miletić <vedran@miletic.net>
Acked-by: Juha-Pekka Heikkila <juhapekka.heikkila@gmail.com>
Reviewed-by: Edward O'Callaghan <funfunctor@folklore1984.net>

src/util/Makefile.sources

@@ -35,8 +35,8 @@ MESA_UTIL_FILES :=	\
 	simple_list.h \
 	slab.c \
 	slab.h \
-	string_to_uint_map.h \
 	string_to_uint_map.cpp \
+	string_to_uint_map.h \
 	strndup.h \
 	strtod.c \
 	strtod.h \