netduinoplus2: Update the information and style

Signed-off-by: Alistair Francis <alistair23@gmail.com>
stm32f405_spi: Change the device size

This fixes the USART not working

Signed-off-by: Alistair Francis <alistair23@gmail.com>
stm32f405_timer: Remove uneeded output

Signed-off-by: Alistair Francis <alistair23@gmail.com>