Add DSB after icache flush to complete the cache maintenance operation.
Signed-off-by: NVinayak Kale <vkale@apm.com>
Acked-by: NCatalin Marinas <catalin.marinas@arm.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>