freedreno/decode: Increase size of offsets table

The offsets table stores offsets of a buffer (such as cmdstream) that
we've already dumped.  The suballoc pool results in more suballocated
cmdstream allocated from a single backing buffer, meaning that we need
to increase the size of this table.

Signed-off-by: Rob Clark <robdclark@chromium.org>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/20975>

src/freedreno/decode/buffers.c

@@ -45,7 +45,7 @@ struct buffer {
    struct {
       unsigned offset;
       unsigned dumped_mask;
-   } offsets[64];
+   } offsets[256];
    unsigned noffsets;
 };