drm/i915/cnl: Add Cannonlake PCI IDs for Y-skus.

By the Spec all CNL Y skus are 2+2, i.e. GT2.

v2: Really include the PCI IDs to the picidlist[];
Reviewed-by: Anusha Srivatsa <anusha.srivatsa@intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1496781040-20888-4-git-send-email-rodrigo.vivi@intel.com

include/drm/i915_pciids.h

@@ -341,7 +341,17 @@
 	INTEL_VGA_DEVICE(0x5A42, info), \
 	INTEL_VGA_DEVICE(0x5A4A, info)
 
+/* CNL Y 2+2 */
+#define INTEL_CNL_Y_GT2_IDS(info) \
+	INTEL_VGA_DEVICE(0x5A51, info), \
+	INTEL_VGA_DEVICE(0x5A59, info), \
+	INTEL_VGA_DEVICE(0x5A41, info), \
+	INTEL_VGA_DEVICE(0x5A49, info), \
+	INTEL_VGA_DEVICE(0x5A71, info), \
+	INTEL_VGA_DEVICE(0x5A79, info)
+
 #define INTEL_CNL_IDS(info) \
-	INTEL_CNL_U_GT2_IDS(info)
+	INTEL_CNL_U_GT2_IDS(info), \
+	INTEL_CNL_Y_GT2_IDS(info)
 
 #endif /* _I915_PCIIDS_H */