gpu: host1x: Add debug support

Add support for host1x debugging. Adds debugfs entries, and dumps
channel state to UART in case of stuck job.

Signed-off-by: Arto Merilainen <amerilainen@nvidia.com>
Signed-off-by: Terje Bergstrom <tbergstrom@nvidia.com>
Reviewed-by: Thierry Reding <thierry.reding@avionic-design.de>
Tested-by: Thierry Reding <thierry.reding@avionic-design.de>
Tested-by: Erik Faye-Lund <kusmabite@gmail.com>
Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de>

drivers/gpu/host1x/hw/host1x01.c

@@ -23,6 +23,7 @@
 /* include code */
 #include "hw/cdma_hw.c"
 #include "hw/channel_hw.c"
+#include "hw/debug_hw.c"
 #include "hw/intr_hw.c"
 #include "hw/syncpt_hw.c"
 
@@ -35,6 +36,7 @@ int host1x01_init(struct host1x *host)
 	host->cdma_pb_op = &host1x_pushbuffer_ops;
 	host->syncpt_op = &host1x_syncpt_ops;
 	host->intr_op = &host1x_intr_ops;
+	host->debug_op = &host1x_debug_ops;
 
 	return 0;
 }