firmware: arm_scmi: Extend perf protocol ops to get number of domains
[ Upstream commit e9090e70 ] Similar to other protocol ops, it's useful for an scmi module driver to get the number of supported performance domains, hence let's make this available by adding a new perf protocol callback. Note that, a user is being added from subsequent changes. Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> Link: https://lore.kernel.org/r/20230825112633.236607-2-ulf.hansson@linaro.org Signed-off-by: Sudeep Holla <sudeep.holla@arm.com> Stable-dep-of: 8e3c98d9 ("firmware: arm_scmi: Fix frequency truncation by promoting multiplier type") Signed-off-by: Sasha Levin <sashal@kernel.org>
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