pwm: stm32: Fix error message to not describe the previous error path

"Failed to lock the clock" is an appropriate error message for
clk_rate_exclusive_get() failing, but not for the clock running too
fast for the driver's calculations.

Adapt the error message accordingly.

Fixes: d44d635 ("pwm: stm32: Fix for settings using period > UINT32_MAX")
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@baylibre.com>
Link: https://lore.kernel.org/r/285182163211203fc823a65b180761f46e828dcb.1718979150.git.u.kleine-koenig@baylibre.com
Signed-off-by: Uwe Kleine-König <ukleinek@kernel.org>

drivers/pwm/pwm-stm32.c

@@ -681,7 +681,8 @@ static int stm32_pwm_probe(struct platform_device *pdev)
  * .apply() won't overflow.
  */
  if (clk_get_rate(priv->clk) > 1000000000)
- return dev_err_probe(dev, -EINVAL, "Failed to lock clock\n");
+ return dev_err_probe(dev, -EINVAL, "Clock freq too high (%lu)\n",
+ clk_get_rate(priv->clk));
 
  chip->ops = &stm32pwm_ops;