panfrost: Split bit out of format.unk3

On Bifrost traces, we can observe that this bit is always enabled.

Signed-off-by: Tomeu Vizoso <tomeu.vizoso@collabora.com>
Reviewed-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/4832>
diff --git a/src/panfrost/pandecode/decode.c b/src/panfrost/pandecode/decode.c
index 48b179a..743abc0 100644
--- a/src/panfrost/pandecode/decode.c
+++ b/src/panfrost/pandecode/decode.c
@@ -991,6 +991,7 @@
         pandecode_prop("unk1 = 0x%" PRIx32, format.unk1);
         pandecode_prop("unk2 = 0x%" PRIx32, format.unk2);
         pandecode_prop("unk3 = 0x%" PRIx32, format.unk3);
+        pandecode_prop("unk4 = 0x%" PRIx32, format.unk4);
 
         pandecode_prop("block = %s", pandecode_block_format(format.block));