drm/amd/display: Add VG12 ASIC IDs

Signed-off-by: Harry Wentland <harry.wentland@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/display/include/dal_asic_id.h

@@ -113,9 +113,14 @@
 
 #define AI_GREENLAND_P_A0 1
 #define AI_GREENLAND_P_A1 2
+#define AI_UNKNOWN 0xFF
 
-#define ASICREV_IS_GREENLAND_M(eChipRev)  (eChipRev < AI_UNKNOWN)
-#define ASICREV_IS_GREENLAND_P(eChipRev)  (eChipRev < AI_UNKNOWN)
+#define AI_VEGA12_P_A0 20
+#define ASICREV_IS_GREENLAND_M(eChipRev)  (eChipRev < AI_VEGA12_P_A0)
+#define ASICREV_IS_GREENLAND_P(eChipRev)  (eChipRev < AI_VEGA12_P_A0)
+
+#define ASICREV_IS_VEGA12_P(eChipRev) ((eChipRev >= AI_VEGA12_P_A0) && (eChipRev < AI_UNKNOWN))
+#define ASICREV_IS_VEGA12_p(eChipRev) ((eChipRev >= AI_VEGA12_P_A0) && (eChipRev < AI_UNKNOWN))
 
 /* DCN1_0 */
 #define INTERNAL_REV_RAVEN_A0             0x00    /* First spin of Raven */