build: fix termios issue on android cross-compile

Bug: https://curl.haxx.se/mail/lib-2018-01/0122.html
Signed-off-by: Ben Greear <greearb@candelatech.com>

src/tool_cb_prg.c

@@ -35,6 +35,12 @@
 
 #include "memdebug.h" /* keep this as LAST include */
 
+#ifdef HAVE_TERMIOS_H
+#  include <termios.h>
+#elif defined(HAVE_TERMIO_H)
+#  include <termio.h>
+#endif
+
 /* 200 values generated by this perl code:
 
    my $pi = 3.1415;