spi: spi-geni-qcom: Use OPP API to set clk/perf state

spi: spi-geni-qcom: Use OPP API to set clk/perf state

geni spi needs to express a perforamnce state requirement on CX
depending on the frequency of the clock rates. Use OPP table from
DT to register with OPP framework and use dev_pm_opp_set_rate() to
set the clk/perf state.

Signed-off-by: Rajendra Nayak <[email protected]>
Reviewed-by: Matthias Kaehlcke <[email protected]>
Acked-by: Mark Brown <[email protected]>
Cc: Alok Chauhan <[email protected]>
Cc: Akash Asthana <[email protected]>
Cc: [email protected]
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Bjorn Andersson <[email protected]>