ARM: 5994/1: ARM: Add outer_cache_fns.sync function pointer (2/4)
This patch introduces the outer_cache_fns.sync function pointer together with the OUTER_CACHE_SYNC config option that can be used to drain the write buffer of the outer cache. Signed-off-by: NCatalin Marinas <catalin.marinas@arm.com> Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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