kconfig: assume the host libc provides POSIX reentrant functions

This change is needed to avoid including Zephyr-specific implementations
of POSIX reentrant functions while building natively. One can safely
assume that the host libc indeed provides its own implementations of
the said functions.

Signed-off-by: Ilya Tagunov <[email protected]>

Author: tagunil

Kconfig.zephyr

@@ -448,6 +448,7 @@ config CODING_GUIDELINE_CHECK
 config NATIVE_LIBC
 	bool
 	select FULL_LIBC_SUPPORTED
+	select TC_PROVIDES_POSIX_C_LANG_SUPPORT_R
 	help
 	  Zephyr will use the host system C library.