rendercopy: Add a way to dump an .aub file with the rendercopy bos

v2 (by Ben): Remove libdrm dependency since intel-gpu-tools now requires
a higher version anyway. Remove associated #ifdef ENABLE_AUB_DUMP

Signed-off-by: Damien Lespiau <damien.lespiau@intel.com>
Signed-off-by: Ben Widawsky <benjamin.widawsky@intel.com>

lib/drmtest.c

@@ -1216,6 +1216,16 @@ void igt_skip_on_simulation(void)
 	igt_require(!igt_run_in_simulation());
 }
 
+bool drmtest_dump_aub(void)
+{
+	static int dump_aub = -1;
+
+	if (dump_aub == -1)
+		dump_aub = env_set("IGT_DUMP_AUB", false);
+
+	return dump_aub;
+}
+
 /* other helpers */
 void igt_exchange_int(void *array, unsigned i, unsigned j)
 {

lib/drmtest.h

@@ -304,6 +304,8 @@ bool igt_run_in_simulation(void);
  */
 void igt_skip_on_simulation(void);
 
+bool drmtest_dump_aub(void);
+
 /* helpers based upon the libdrm buffer manager */
 void igt_init_aperture_trashers(drm_intel_bufmgr *bufmgr);
 void igt_trash_aperture(void);