Netduino_USART: Update from Peter C's comments on list

Signed-off-by: Alistair Francis <alistair23@gmail.com>
Netduino_GPIO: Update from Peter C's comments on list

Signed-off-by: Alistair Francis <alistair23@gmail.com>
Netduino_SYSCFG: Update from Peter C's comments on list

Signed-off-by: Alistair Francis <alistair23@gmail.com>
Netduino_Timer: Update from Peter C's comments on list

Signed-off-by: Alistair Francis <alistair23@gmail.com>
Netduino: Update from Peter C's comments on list

Signed-off-by: Alistair Francis <alistair23@gmail.com>
Merge branch 'csse4080.dev' of https://github.com/alistair23/qemu into csse4080.dev