ASoC: codec: sma1307: Remove including of_gpio.h

of_gpio.h is deprecated. And there is no user in this driver
using API in of_gpio.h, so remove it.

Signed-off-by: Peng Fan <peng.fan@nxp.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://patch.msgid.link/20250427055020.176099-1-peng.fan@oss.nxp.com


Signed-off-by: Mark Brown <broonie@kernel.org>