i3c: master: cdns: Simplify handling clocks in probe()

i3c: master: cdns: Simplify handling clocks in probe()

The two clocks, driver is getting, are not being disabled/re-enabled
during runtime of the device.  Eliminate one variable in state struct,
all error paths and a lot of code from probe() and remove() by using
devm_clk_get_enabled().

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Frank Li <Frank.Li@nxp.com>
Link: https://lore.kernel.org/r/20250713152411.74917-2-krzysztof.kozlowski@linaro.org
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>