boot: Add config for dongle bare variant

# The UART is used for Serial Recovery, so logging requires

# an RTT console, which is not available out of the box on this board.

# Disable logging.

CONFIG_LOG=n

# Serial

CONFIG_CONSOLE=n

CONFIG_SERIAL=y

CONFIG_UART_NRFX=n

CONFIG_UART_INTERRUPT_DRIVEN=y

CONFIG_UART_LINE_CTRL=y

# MCUBoot serial

CONFIG_GPIO=y

CONFIG_MCUBOOT_SERIAL=y

CONFIG_BOOT_SERIAL_CDC_ACM=y

# Required by USB

CONFIG_MULTITHREADING=y

# USB

CONFIG_USB_DEVICE_STACK=y

CONFIG_USB_DEVICE_REMOTE_WAKEUP=n

CONFIG_USB_DEVICE_PRODUCT="MCUBOOT"

CONFIG_NORDIC_QSPI_NOR=n