coresight: catu: Make catu_helper_ops and catu_ops static

Fix sparse warnings:

drivers/hwtracing/coresight/coresight-catu.c:488:35: warning:
 symbol 'catu_helper_ops' was not declared. Should it be static?
drivers/hwtracing/coresight/coresight-catu.c:493:28: warning:
 symbol 'catu_ops' was not declared. Should it be static?
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Reviewed-by: Mukesh Ojha <mojha@codeaurora.org>
Reviewed-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/hwtracing/coresight/coresight-catu.c

@@ -485,12 +485,12 @@ static int catu_disable(struct coresight_device *csdev, void *__unused)
 	return rc;
 }
 
-const struct coresight_ops_helper catu_helper_ops = {
+static const struct coresight_ops_helper catu_helper_ops = {
 	.enable = catu_enable,
 	.disable = catu_disable,
 };
 
-const struct coresight_ops catu_ops = {
+static const struct coresight_ops catu_ops = {
 	.helper_ops = &catu_helper_ops,
 };