coresight: etm_pmu: Set the module field

struct pmu::module must be set to the module owning the PMU driver.
Set this for the coresight etm_pmu.

Fixes: 8e264c52 ("coresight: core: Allow the coresight core driver to be built as a module")
Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Link: https://lore.kernel.org/r/20230405094922.667834-1-suzuki.poulose@arm.com

drivers/hwtracing/coresight/coresight-etm-perf.c

@@ -901,6 +901,7 @@ int __init etm_perf_init(void)
 	etm_pmu.addr_filters_sync	= etm_addr_filters_sync;
 	etm_pmu.addr_filters_validate	= etm_addr_filters_validate;
 	etm_pmu.nr_addr_filters		= ETM_ADDR_CMP_MAX;
+	etm_pmu.module			= THIS_MODULE;
 
 	ret = perf_pmu_register(&etm_pmu, CORESIGHT_ETM_PMU_NAME, -1);
 	if (ret == 0)