Describe the bug

When using printf together with newlib.c the z_impl_zephyr_write_stdout from lib-hooks.c add an extra carriage return from

in addition to the uart_console.c which prepend every line feed (\n)

To Reproduce

1. Open a hello world sample
2. Add CONFIG_NEWLIB_LIBC=y in prj.conf
3. add printk("printk 0d0a:\n");
4. add printf("printf 0d0d0a:\n");
5. compile
6. observe print in hex format

Expected behavior
Both print should have the same number of carriage return
Impact

Logs and console output

Environment (please complete the following information):

• OS: (Ubuntu 24.04 and windows 11)
• Toolchain (NCS 2.9, but the functions are the same in zephyr main)
• Commit SHA or Version used

Additional context