drm/i915/icl: Add missing device ID

We are missing PCI device ID for SKU ICLLP U GT 1.5F (0x8A54) as per BSPec.

BSpec: 19092
Signed-off-by: Mika Kahola <mika.kahola@intel.com>
Reviewed-by: Clint Taylor <Clinton.A.Taylor@intel.com>
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190617082413.22549-1-mika.kahola@intel.com

include/drm/i915_pciids.h

@@ -568,7 +568,8 @@
 	INTEL_VGA_DEVICE(0x8A56, info), \
 	INTEL_VGA_DEVICE(0x8A71, info), \
 	INTEL_VGA_DEVICE(0x8A70, info), \
-	INTEL_VGA_DEVICE(0x8A53, info)
+	INTEL_VGA_DEVICE(0x8A53, info), \
+	INTEL_VGA_DEVICE(0x8A54, info)
 
 #define INTEL_ICL_11_IDS(info) \
 	INTEL_ICL_PORT_F_IDS(info), \