drm/radeon/kms: fix typo in printing the HPD info

I forgot to fix this in 8e36ed00842668a39a6ed1b0a00b8ac92b7c4cd5

Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
diff --git a/drivers/gpu/drm/radeon/radeon_display.c b/drivers/gpu/drm/radeon/radeon_display.c
index 1006549..8154cdf 100644
--- a/drivers/gpu/drm/radeon/radeon_display.c
+++ b/drivers/gpu/drm/radeon/radeon_display.c
@@ -284,8 +284,7 @@
 	"eDP",
 };
 
-static const char *hpd_names[7] = {
-	"NONE",
+static const char *hpd_names[6] = {
 	"HPD1",
 	"HPD2",
 	"HPD3",