perf/marvell: Odyssey DDR Performance monitor support

Odyssey DRAM Subsystem supports eight counters for monitoring performance
and software can program those counters to monitor any of the defined
performance events. Supported performance events include those counted
at the interface between the DDR controller and the PHY, interface between
the DDR Controller and the CHI interconnect, or within the DDR Controller.

Additionally DSS also supports two fixed performance event counters, one
for ddr reads and the other for ddr writes.

Signed-off-by: Gowthami Thiagarajan <gthiagarajan@marvell.com>
Link: https://lore.kernel.org/r/20241108040619.753343-4-gthiagarajan@marvell.com
Signed-off-by: Will Deacon <will@kernel.org>

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