Move single line printing to a separate function named
mbedtls_debug_print_buf_one_line(). This accepts one extra parameter
'add_text' to tell if the final text chars are to be printed at the end
of the line or not.
Add also mbedtls_debug_print_buf_ext() as a generalized version of
mbedtls_debug_print_buf() by adding the extra 'add_text' param.
debug_print_pk() will now use mbedtls_debug_print_buf_ext() in order not
to print chars while dumping the buffer.
Signed-off-by: Valerio Setti <valerio.setti@nordicsemi.no>
f1cb45289b