drm/tegra: Fix HDMI audio frequency typo

The correct check is for 48 kHz, not 480 kHz. Found by Coverity.

Signed-off-by: Thierry Reding <treding@nvidia.com>
diff --git a/drivers/gpu/drm/tegra/hdmi.c b/drivers/gpu/drm/tegra/hdmi.c
index 0cfc94f..d8cc81f 100644
--- a/drivers/gpu/drm/tegra/hdmi.c
+++ b/drivers/gpu/drm/tegra/hdmi.c
@@ -379,7 +379,7 @@
 
 		if (f > 96000)
 			delta = 2;
-		else if (f > 480000)
+		else if (f > 48000)
 			delta = 6;
 		else
 			delta = 9;