ASoC: sigmadsp: align function prototype

cppcheck warning:

sound/soc/codecs/sigmadsp.c:736:60: style:inconclusive: Function
'sigmadsp_setup' argument 2 names different: declaration 'rate'
definition 'samplerate'. [funcArgNamesDifferent]
int sigmadsp_setup(struct sigmadsp *sigmadsp, unsigned int samplerate)
                                                           ^

sound/soc/codecs/sigmadsp.h:62:60: note: Function 'sigmadsp_setup'
argument 2 names different: declaration 'rate' definition
'samplerate'.
int sigmadsp_setup(struct sigmadsp *sigmadsp, unsigned int rate);
                                                           ^

sound/soc/codecs/sigmadsp.c:736:60: note: Function 'sigmadsp_setup'
argument 2 names different: declaration 'rate' definition
'samplerate'.
int sigmadsp_setup(struct sigmadsp *sigmadsp, unsigned int samplerate)
                                                           ^
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/20210312182246.5153-18-pierre-louis.bossart@linux.intel.comSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/codecs/sigmadsp.h

@@ -59,7 +59,7 @@ struct sigmadsp *devm_sigmadsp_init_i2c(struct i2c_client *client,
 
 int sigmadsp_attach(struct sigmadsp *sigmadsp,
 	struct snd_soc_component *component);
-int sigmadsp_setup(struct sigmadsp *sigmadsp, unsigned int rate);
+int sigmadsp_setup(struct sigmadsp *sigmadsp, unsigned int samplerate);
 void sigmadsp_reset(struct sigmadsp *sigmadsp);
 
 #endif