lm96063 fan driver: Initialize "spinup" register to 50%

	* b/13364869
	* lm96063 has a spinup feature that defaults to 100% for 3.2 seconds
		when fan is first turned on (to unfreeze a stuck fan?)
	* fan @ 100% is too loud, 50% seems fine
	* I hesitate to make it 0% or we might get stuck fans after years

Change-Id: I6879cc51148b11b5907d6857874c1f22d2276b89
1 file changed