sh: Support for SH-4A memory barriers.
SH-4A supports 'synco' as a barrier, sprinkle it around
the cache ops as necessary..
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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SH-4A supports 'synco' as a barrier, sprinkle it around
the cache ops as necessary..
Signed-off-by: Paul Mundt <lethal@linux-sh.org>