Enable CONFIG_IPC_CLASSES for Intel Thread Director

configs/surface-6.1.config

@@ -56,6 +56,11 @@ CONFIG_VIDEO_OV8865=m
 #
 CONFIG_APDS9960=m
 
+#
+# For Intel Thread Director (Alder-Lake)
+#
+CONFIG_IPC_CLASSES=y
+
 #
 # Other Drivers
 #

configs/surface-6.2.config

@@ -56,6 +56,11 @@ CONFIG_VIDEO_OV8865=m
 #
 CONFIG_APDS9960=m
 
+#
+# For Intel Thread Director (Alder-Lake)
+#
+CONFIG_IPC_CLASSES=y
+
 #
 # Other Drivers
 #