util: Move u_dynarray to src/util

This will be used as the basis for unification

Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Reviewed-by: Eric Engestrom <eric.engestrom@imgtec.com>

src/gallium/auxiliary/Makefile.sources

@@ -221,7 +221,6 @@ C_SOURCES := \
 	util/u_dump_defines.c \
 	util/u_dump.h \
 	util/u_dump_state.c \
-	util/u_dynarray.h \
 	util/u_fifo.h \
 	util/u_format.c \
 	util/u_format.h \

src/util/Makefile.sources

@@ -45,6 +45,7 @@ MESA_UTIL_FILES := \
 	texcompress_rgtc_tmp.h \
 	u_atomic.c \
 	u_atomic.h \
+	u_dynarray.h \
 	u_endian.h \
 	u_queue.c \
 	u_queue.h \