hw/mcu/nordic: Fix stop on I2C write
hw/mcu/nordic: Fix stop on I2C write

This seems to be done by mistake in some earlier commit, but we should
not put stop condition on bus after every write - only if we were asked
to (or in case of error).

mlaz/mynewt-core,mlaz/mynewt-core,mlaz/mynewt-core,mlaz/mynewt-core,mlaz/mynewt-core