perf/arm-cmn: Fix DTC domain detection
It transpires that dtm_unit_info is another register which got shuffled in CMN-700 without me noticing. Fix that in a way which also proactively fixes the fragile laziness of its consumer, just in case any further fields ever get added alongside dtc_domain. Fixes: 23760a01 ("perf/arm-cmn: Add CMN-700 support") Signed-off-by: Robin Murphy <robin.murphy@arm.com> Reviewed-by: Ilkka Koskinen <ilkka@os.amperecomputing.com> Link: https://lore.kernel.org/r/3076ee83d0554f6939fbb6ee49ab2bdb28d8c7ee.1697824215.git.robin.murphy@arm.comSigned-off-by: Will Deacon <will@kernel.org>
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