config: Enable support for privacy LEDs on the Surface Go line

configs/surface-6.2.config

@@ -43,6 +43,7 @@ CONFIG_CIO2_BRIDGE=y
 CONFIG_INTEL_SKL_INT3472=m
 CONFIG_REGULATOR_TPS68470=m
 CONFIG_COMMON_CLK_TPS68470=m
+CONFIG_LEDS_TPS68470=m
 
 ##
 ## Cameras: Sensor drivers