sbi_load/store_loop read/write variable-length buffer unprivileged.
Both function use the widest aligned 8/4/2/1 byte load/stores in each
loop to reduce the total number of iterations.
Also switch the scalar/vector misaligned handlers to make use of such
functions to simplify code.
Miscellaneous: remove the unnecessary [taddr] in inline assembly
Signed-off-by: Bo Gan <ganboing@gmail.com>
Tested-by: Anirudh Srinivasan <asrinivasan@oss.tenstorrent.com>
Reviewed-by: Anup Patel <anup@brainfault.org>
Link: https://lore.kernel.org/r/20260609060024.706-4-ganboing@gmail.com
Signed-off-by: Anup Patel <anup@brainfault.org>
