termios: Move isatty, __isatty_nostatus from io

Reviewed-by: Adhemerval Zanella  <adhemerval.zanella@linaro.org>

The definition may depend on termios internals.

io/Makefile

@@ -91,8 +91,6 @@ routines := \
   getcwd \
   getdirname \
   getwd \
-  isatty \
-  isatty_nostatus \
   lchmod \
   lchown \
   link \

io/Versions

@@ -26,9 +26,6 @@ libc {
     # g*
     get_current_dir_name; getcwd; getwd;
 
-    # i*
-    isatty;
-
     # l*
     lchown; link; lockf; lseek;
 

termios/Makefile

@@ -36,6 +36,8 @@ routines := \
   cfmakeraw \
   cfsetbaud \
   cfsetspeed \
+  isatty \
+  isatty_nostatus \
   speed \
   tcdrain \
   tcflow \

termios/Versions

@@ -3,6 +3,9 @@ libc {
     # c*
     cfgetispeed; cfgetospeed; cfmakeraw; cfsetispeed; cfsetospeed; cfsetspeed;
 
+    # i*
+    isatty;
+
     # t*
     tcdrain; tcflow; tcflush; tcgetattr; tcgetpgrp; tcsendbreak; tcsetattr;
     tcsetpgrp;