Hi. Same by me. Trackpad PrefPanel is empty. Latest Sierra Developer beta. ApplePS2SmartTouchPad v. 4.6.5. ELAN v.3
kernel: (ApplePS2Controller) STD :: Enhanced Apple PS2 Controller and Keyboard driver v4.6.5 Copyright (c) EMlyDinEsH <www.osxlatitude.com> 2012-2016.
kernel: (ApplePS2Keyboard) STD :: Initializing keyboard...
kernel: (ApplePS2Keyboard) STD :: Keyboard echo success.
kernel: (ApplePS2Keyboard) STD :: Keyboard enabled.
kernel: (ApplePS2SmartTouchPad) STD :: Smart PS2 Touchpad v4.6.5 Copyright (c) EMlyDinEsH <www.osxlatitude.com> 2012-2016.
kernel: (ApplePS2SmartTouchPad) STD :: Detecting the touchpad...
kernel: (ApplePS2SmartTouchPad) STD :: ELAN touchpad found, Hardware version 3 (Firmware version 0x450f00)
kernel: (ApplePS2SmartTouchPad) STD :: ClickPad? No
kernel: (ApplePS2SmartTouchPad) STD :: Capabilities query result 0x08, 0x15, 0x0c.
kernel: (ApplePS2SmartTouchPad) STD :: Touchpad ranges are X_min 0 Y_min 0 X_max 2508 Y_max 1320, CenterX 1254, CenterY 660.
kernel: (ApplePS2SmartTouchPad) STD :: OS X version 10.12.0
kernel: (ApplePS2SmartTouchPad) STD :: Touchpad enabled.