clk: qcom: apq8016: Fix SDCC clock warnings

clk: qcom: apq8016: Fix SDCC clock warnings

As of commit dc8754e8e408 ("clk/qcom: apq8016: improve clk_enable logging")
there are now warnings in the U-Boot console on DragonBoard 410c:

  apq8016_clk_enable: unknown clk id 122
  apq8016_clk_enable: unknown clk id 123
  apq8016_clk_enable: unknown clk id 124
  apq8016_clk_enable: unknown clk id 125

This is because we don't implement enable() properly for the SDCC clocks.
Currently they are being enabled as part of set_rate().

Fix this by moving the enable calls out of the apq8016_clk_init_sdc()
function and convert them to the equivalent GATE_CLK_POLLED() definitions.

Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Signed-off-by: Stephan Gerhold <stephan.gerhold@linaro.org>
Reviewed-by: Sumit Garg <sumit.garg@oss.qualcomm.com>
Reviewed-by: Casey Connolly <casey.connolly@linaro.org>
Link: https://lore.kernel.org/r/20250424-apq8016-clock-fixes2-v2-6-fcc371c9e45f@linaro.org
Signed-off-by: Casey Connolly <casey.connolly@linaro.org>