panfrost: Make instrs_equal check res table/index

Add resource table and index check to instruction equality function.
This prevents CSE from mistakenly eliminating LEA_BUF_IMM instructions
that load from different resources, but with the same buffer offset.

Cc: mesa-stable
Reviewed-by: Erik Faye-Lund <erik.faye-lund@collabora.com>
Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/37007>

src/panfrost/compiler/bi_opt_cse.c

@@ -117,6 +117,12 @@ instrs_equal(const void *_i1, const void *_i2)
          return false;
    }
 
+   if (i1->table != i2->table)
+      return false;
+
+   if (i1->index != i2->index)
+      return false;
+
    return true;
 }