pan/bi: Add load_output support

This is mapped to the LD_TILE instruction. Note that multi-sample RTs
are not supported yet.

Signed-off-by: Boris Brezillon <boris.brezillon@collabora.com>
Reviewed-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/7151>
diff --git a/src/panfrost/bifrost/compiler.h b/src/panfrost/bifrost/compiler.h
index 350a0d4..7a2a1fd 100644
--- a/src/panfrost/bifrost/compiler.h
+++ b/src/panfrost/bifrost/compiler.h
@@ -66,6 +66,7 @@
         BI_LOAD_ATTR,
         BI_LOAD_VAR,
         BI_LOAD_VAR_ADDRESS,
+        BI_LOAD_TILE,
         BI_MINMAX,
         BI_MOV,
         BI_REDUCE_FMA,