gallium/util: move u_queue.{c,h} to src/util

This will allow us to use it outside of gallium for things like
compressing shader cache entries.

Reviewed-by: Marek Olšák <marek.olsak@amd.com>

src/gallium/auxiliary/Makefile.sources

@@ -276,8 +276,6 @@ C_SOURCES := \
 	util/u_pstipple.c \
 	util/u_pstipple.h \
 	util/u_pwr8.h \
-	util/u_queue.c \
-	util/u_queue.h \
 	util/u_range.h \
 	util/u_rect.h \
 	util/u_resource.c \

src/util/Makefile.sources

@@ -44,6 +44,8 @@ MESA_UTIL_FILES :=	\
 	texcompress_rgtc_tmp.h \
 	u_atomic.h \
 	u_endian.h \
+	u_queue.c \
+	u_queue.h \
 	u_string.h \
 	u_thread.h \
 	u_vector.c \