drm/i915: vbt defs typo fixes

No more sing-a-ling.
Reported-by: Adam Jackson <ajax@redhat.com>
You're-my-ding-a-ling-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: David Weinehall <david.weinehall@linux.intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180118150613.26140-1-jani.nikula@intel.com

drivers/gpu/drm/i915/intel_vbt_defs.h

@@ -227,7 +227,7 @@ struct bdb_general_features {
 #define DEVICE_TYPE_COMPOSITE_OUTPUT	(1 << 9)
 #define DEVICE_TYPE_DUAL_CHANNEL	(1 << 8)
 #define DEVICE_TYPE_HIGH_SPEED_LINK	(1 << 6)
-#define DEVICE_TYPE_LVDS_SINGALING	(1 << 5)
+#define DEVICE_TYPE_LVDS_SIGNALING	(1 << 5)
 #define DEVICE_TYPE_TMDS_DVI_SIGNALING	(1 << 4)
 #define DEVICE_TYPE_VIDEO_SIGNALING	(1 << 3)
 #define DEVICE_TYPE_DISPLAYPORT_OUTPUT	(1 << 2)
@@ -243,7 +243,7 @@ struct bdb_general_features {
 	 DEVICE_TYPE_MIPI_OUTPUT |		\
 	 DEVICE_TYPE_COMPOSITE_OUTPUT |		\
 	 DEVICE_TYPE_DUAL_CHANNEL |		\
-	 DEVICE_TYPE_LVDS_SINGALING |		\
+	 DEVICE_TYPE_LVDS_SIGNALING |		\
 	 DEVICE_TYPE_TMDS_DVI_SIGNALING |	\
 	 DEVICE_TYPE_VIDEO_SIGNALING |		\
 	 DEVICE_TYPE_DISPLAYPORT_OUTPUT |	\
@@ -253,7 +253,7 @@ struct bdb_general_features {
 	(DEVICE_TYPE_INTERNAL_CONNECTOR |	\
 	 DEVICE_TYPE_MIPI_OUTPUT |		\
 	 DEVICE_TYPE_COMPOSITE_OUTPUT |		\
-	 DEVICE_TYPE_LVDS_SINGALING |		\
+	 DEVICE_TYPE_LVDS_SIGNALING |		\
 	 DEVICE_TYPE_TMDS_DVI_SIGNALING |	\
 	 DEVICE_TYPE_VIDEO_SIGNALING |		\
 	 DEVICE_TYPE_DISPLAYPORT_OUTPUT |	\