ASOC: max98090/91: fix for filter configuration: AHPF removed DMIC2_HPF added

The filter configuration register(0x26) has AHPF(bit6) for primary record
path, which is common in max98090 and max98091 and has been defined as
DAPM suppy widget as "AHPF" in
"struct snd_soc_dapm_widget max98090_dapm_widget[]".
It is the DC-Blocking filter for the primary record path.
But the same functionality for secondary record path in the configuration
register(0x26) is DMIC2_HPF(bit2). It is not present as a DAPM supply
widget in the current code. With this patch adding it as a DAPM supply
widget. In the current code, the mics on secondary record path in
code are named as "DMIC3" and "DMIC4", so accordingly naming
DMIC2_HPF(bit2) as "DMIC34_HPF", and declaring it as a DAPM supply
widget in "struct snd_soc_dapm_widget max98091_dapm_widget[]". Also it
is specific to max98091, and should be visible or working only when
max98091 codec chip is used. Therefore, written in
"max98091_dapm_widget[]". As "AHPF" is not part
of secondary record path, replacing it with "DMIC34_HPF" in the
ALSA routes to "DMIC3" and "DMIC4" in "max98091_dapm_routes[]".

Signed-off-by: Sharique Mohammad <sharq0406@gmail.com>
Link: https://patch.msgid.link/20251016151152.1107083-1-sharq0406@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>

Author: Sharq7

sound/soc/codecs/max98090.c

@@ -1239,6 +1239,8 @@ static const struct snd_soc_dapm_widget max98091_dapm_widgets[] = {
 	SND_SOC_DAPM_SUPPLY("DMIC4_ENA", M98090_REG_DIGITAL_MIC_ENABLE,
 		 M98090_DIGMIC4_SHIFT, 0, max98090_shdn_event,
 			 SND_SOC_DAPM_POST_PMU),
+	SND_SOC_DAPM_SUPPLY("DMIC34_HPF", M98090_REG_FILTER_CONFIG,
+		M98090_FLT_DMIC34HPF_SHIFT, 0, NULL, 0),
 };
 
 static const struct snd_soc_dapm_route max98090_dapm_routes[] = {
@@ -1427,8 +1429,8 @@ static const struct snd_soc_dapm_route max98091_dapm_routes[] = {
 	/* DMIC inputs */
 	{"DMIC3", NULL, "DMIC3_ENA"},
 	{"DMIC4", NULL, "DMIC4_ENA"},
-	{"DMIC3", NULL, "AHPF"},
-	{"DMIC4", NULL, "AHPF"},
+	{"DMIC3", NULL, "DMIC34_HPF"},
+	{"DMIC4", NULL, "DMIC34_HPF"},
 };
 
 static int max98090_add_widgets(struct snd_soc_component *component)