Marking the two jack gpio as static fixes the following Sparse errors:
sound/soc/intel/boards/bytcr_rt5640.c:468:26: error: symbol 'rt5640_jack_gpio' was not declared. Should it be static?
sound/soc/intel/boards/bytcr_rt5640.c:475:26: error: symbol 'rt5640_jack2_gpio' was not declared. Should it be static?
Fixes: 9ba00856686ad ("ASoC: Intel: bytcr_rt5640: Add support for HP Elite Pad 1000G2 jack-detect")
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@linux.intel.com>
Link: https://lore.kernel.org/r/20210825122519.3364-1-peter.ujfalusi@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
        },
 };
 
-struct snd_soc_jack_gpio rt5640_jack_gpio = {
+static struct snd_soc_jack_gpio rt5640_jack_gpio = {
        .name = "hp-detect",
        .report = SND_JACK_HEADSET,
        .invert = true,
        .debounce_time = 200,
 };
 
-struct snd_soc_jack_gpio rt5640_jack2_gpio = {
+static struct snd_soc_jack_gpio rt5640_jack2_gpio = {
        .name = "hp2-detect",
        .report = SND_JACK_HEADSET,
        .invert = true,