mfd: remove unused PASIC3 bus_shift field

Removes the now-unused bus_shift field from pasic3_platform_data.
Signed-off-by: Philipp Zabel <philipp.zabel@gmail.com>
Signed-off-by: Samuel Ortiz <sameo@openedhand.com>

include/linux/mfd/htc-pasic3.h

@@ -48,7 +48,6 @@ struct pasic3_leds_machinfo {
 
 struct pasic3_platform_data {
 	struct pasic3_leds_machinfo *led_pdata;
-	unsigned int                 bus_shift;
 	unsigned int                 clock_rate;
 };