panfrost: Use PIPE_CAP_VERTEX_ATTRIB_ELEMENT_ALIGNED_ONLY

..instead of 4BYTE_ALIGNED_ONLY. This is more correct and avoids needless repacking. Noticed in Firefox, which was hitting the vbuf translate path.

Fixes: e03622e5 ("panfrost: Set STRIDE_4BYTE_ALIGNED_ONLY") Signed-off-by: Alyssa Rosenzweig alyssa@collabora.com