drivers: sound: Remove duplicate newlines

Drop all duplicate newlines. No functional change.

Signed-off-by: Marek Vasut <marek.vasut+renesas@mailbox.org>
diff --git a/drivers/sound/wm8994.c b/drivers/sound/wm8994.c
index 6b3091a..4294735 100644
--- a/drivers/sound/wm8994.c
+++ b/drivers/sound/wm8994.c
@@ -579,7 +579,6 @@
 	ret = wm8994_bic_or(priv, WM8994_AIF2_DAC_FILTERS_1,
 			    WM8994_AIF2DAC_MUTE_MASK, 0);
 
-
 	ret |= wm8994_bic_or(priv, WM8994_AIF2_DAC_LEFT_VOLUME,
 			     WM8994_AIF2DAC_VU_MASK | WM8994_AIF2DACL_VOL_MASK,
 			     WM8994_AIF2DAC_VU | 0xff);
@@ -588,7 +587,6 @@
 			     WM8994_AIF2DAC_VU_MASK | WM8994_AIF2DACR_VOL_MASK,
 			     WM8994_AIF2DAC_VU | 0xff);
 
-
 	ret |= wm8994_bic_or(priv, WM8994_DAC1_LEFT_VOLUME,
 			     WM8994_DAC1_VU_MASK | WM8994_DAC1L_VOL_MASK |
 			     WM8994_DAC1L_MUTE_MASK, WM8994_DAC1_VU | 0xc0);