iwave/iWRainbowG6: use 16bit access for a register which is not 32bit aligned

The PCI registers should be accessed aligned and 0x62 is not 32bit
aligned therefore this patch changes it to a 16bit access.

Change-Id: I00725a4569f471eedb061834f626911b42e734fb
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Reviewed-on: http://review.coreboot.org/1631
Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
Tested-by: build bot (Jenkins)
1 file changed