Revert "posix: kconfig: remove select y from non-user-selectable help"

This reverts commit b82b5b0.

PR zephyrproject-rtos#73978 introduced a regression.
Unfortunately this PR cannot be reverted without reverting also
Let's revert both PRs to stabilize main again towards the 3.7 release.

For more details on the issue see
zephyrproject-rtos#75205

Signed-off-by: Alberto Escolar Piedras <alberto.escolar.piedras@nordicsemi.no>

lib/posix/options/Kconfig.device_io

@@ -27,27 +27,27 @@ if POSIX_DEVICE_IO
 config POSIX_DEVICE_IO_ALIAS_CLOSE
 	bool
 	help
-	  When selected via Kconfig, Zephyr will provide an alias for close() as _close().
+	  Select 'y' here and Zephyr will provide an alias for close() as _close().
 
 config POSIX_DEVICE_IO_ALIAS_OPEN
 	bool
 	help
-	  When selected via Kconfig, Zephyr will provide an alias for open() as _open().
+	  Select 'y' here and Zephyr will provide an alias for open() as _open().
 
 config POSIX_DEVICE_IO_ALIAS_READ
 	bool
 	help
-	  When selected via Kconfig, Zephyr will provide an alias for read() as _read().
+	  Select 'y' here and Zephyr will provide an alias for read() as _read().
 
 config POSIX_DEVICE_IO_ALIAS_WRITE
 	bool
 	help
-	  When selected via Kconfig, Zephyr will provide an alias for write() as _write().
+	  Select 'y' here and Zephyr will provide an alias for write() as _write().
 
 config POSIX_DEVICE_IO_STDIN_STDOUT_STDERR
 	bool
 	help
-	  When selected via Kconfig, Zephyr will provide the stdin, stdout, and stderr variables.
+	  Select 'y' here and Zephyr will provide the stdin, stdout, and stderr variables.
 
 	  Some libc's that implement the POSIX API may already have declared these variables.
 	  However, it should be noted that they are a part of POSIX and not a part of ISO C.

lib/posix/options/Kconfig.fd_mgmt

@@ -21,16 +21,16 @@ if POSIX_FD_MGMT
 config POSIX_FD_MGMT_ALIAS_FCNTL
 	bool
 	help
-	  When selected via Kconfig, Zephyr will provide an alias for fcntl() as _fcntl().
+	  Select 'y' here and Zephyr will provide an alias for fcntl() as _fcntl().
 
 config POSIX_FD_MGMT_ALIAS_FTRUNCATE
 	bool
 	help
-	  When selected via Kconfig, Zephyr will provide an alias for ftruncate() as _ftruncate().
+	  Select 'y' here and Zephyr will provide an alias for ftruncate() as _ftruncate().
 
 config POSIX_FD_MGMT_ALIAS_LSEEK
 	bool
 	help
-	  When selected via Kconfig, Zephyr will provide an alias for lseek() as _lseek().
+	  Select 'y' here and Zephyr will provide an alias for lseek() as _lseek().
 
 endif # POSIX_FD_MGMT

lib/posix/options/Kconfig.fs

@@ -15,6 +15,6 @@ if POSIX_FILE_SYSTEM
 config POSIX_FILE_SYSTEM_ALIAS_FSTAT
 	bool
 	help
-	  When selected via Kconfig, Zephyr will provide an alias for fstat() as _fstat().
+	  Select 'y' here and Zephyr will provide an alias for fstat() as _fstat().
 
 endif # POSIX_FILE_SYSTEM