zephyr/prj_minimal.conf: Switch to CONFIG_STDOUT_CONSOLE.
Prompted by code size analysis, after arduino_101 build overflowing ROM.
-CONFIG_STDOUT_CONSOLE=y
-CONFIG_CONSOLE_HANDLER=y
-CONFIG_UART_CONSOLE_DEBUG_SERVER_HOOKS=y
CONFIG_NEWLIB_LIBC=y
CONFIG_FLOAT=y
CONFIG_MAIN_STACK_SIZE=4096
+
+CONFIG_UART_INTERRUPT_DRIVEN=y
+CONFIG_CONSOLE_SUBSYS=y
+CONFIG_CONSOLE_GETCHAR=y
+CONFIG_CONSOLE_GETCHAR_BUFSIZE=32
+CONFIG_CONSOLE_PUTCHAR_BUFSIZE=32
+# TODO: Disable once https://github.com/zephyrproject-rtos/zephyr/pull/13731 is merged
+#CONFIG_CONSOLE=n
+#CONFIG_UART_CONSOLE=n
