ASoC: mediatek: mt6359: Fix regulator_dev_lookup() fails for id "LDO_VAUD18"

Mt6359 platform device is instantiated by mfd_add_devices(). In the
case, dev->of_node is NULL so that always fails to get the regulator_dev.

Use regualator-name "vaud18" that in dts node instead of
"LDO_VAUD19-supply". So that we can get regulator_dev through
regulator_lookup_by_name() directly.

Fixes: 64a70744 ("ASoC: Fix vaud18 power leakage of mt6359")
Signed-off-by: Jiaxin Yu <jiaxin.yu@mediatek.com>
Link: https://lore.kernel.org/r/1605841573-1442-2-git-send-email-jiaxin.yu@mediatek.comSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/codecs/mt6359.c

@@ -1943,7 +1943,6 @@ static const struct snd_soc_dapm_widget mt6359_dapm_widgets[] = {
 	SND_SOC_DAPM_SUPPLY_S("CLK_BUF", SUPPLY_SEQ_CLK_BUF,
 			      MT6359_DCXO_CW12,
 			      RG_XO_AUDIO_EN_M_SFT, 0, NULL, 0),
-	SND_SOC_DAPM_REGULATOR_SUPPLY("LDO_VAUD18", 0, 0),
 	SND_SOC_DAPM_SUPPLY_S("AUDGLB", SUPPLY_SEQ_AUD_GLB,
 			      MT6359_AUDDEC_ANA_CON13,
 			      RG_AUDGLB_PWRDN_VA32_SFT, 1, NULL, 0),
@@ -1963,6 +1962,8 @@ static const struct snd_soc_dapm_widget mt6359_dapm_widgets[] = {
 	SND_SOC_DAPM_SUPPLY_S("AUDIF_CK", SUPPLY_SEQ_TOP_CK,
 			      MT6359_AUD_TOP_CKPDN_CON0,
 			      RG_AUDIF_CK_PDN_SFT, 1, NULL, 0),
+	SND_SOC_DAPM_REGULATOR_SUPPLY("vaud18", 0, 0),
+
 	/* Digital Clock */
 	SND_SOC_DAPM_SUPPLY_S("AUDIO_TOP_AFE_CTL", SUPPLY_SEQ_AUD_TOP_LAST,
 			      MT6359_AUDIO_TOP_CON0,
@@ -2312,7 +2313,7 @@ static int mt_dcc_clk_connect(struct snd_soc_dapm_widget *source,
 static const struct snd_soc_dapm_route mt6359_dapm_routes[] = {
 	/* Capture */
 	{"AIFTX_Supply", NULL, "CLK_BUF"},
-	{"AIFTX_Supply", NULL, "LDO_VAUD18"},
+	{"AIFTX_Supply", NULL, "vaud18"},
 	{"AIFTX_Supply", NULL, "AUDGLB"},
 	{"AIFTX_Supply", NULL, "CLKSQ Audio"},
 	{"AIFTX_Supply", NULL, "AUD_CK"},
@@ -2440,7 +2441,7 @@ static const struct snd_soc_dapm_route mt6359_dapm_routes[] = {
 
 	/* DL Supply */
 	{"DL Power Supply", NULL, "CLK_BUF"},
-	{"DL Power Supply", NULL, "LDO_VAUD18"},
+	{"DL Power Supply", NULL, "vaud18"},
 	{"DL Power Supply", NULL, "AUDGLB"},
 	{"DL Power Supply", NULL, "CLKSQ Audio"},
 	{"DL Power Supply", NULL, "AUDNCP_CK"},