ANDROID: GKI: rockchip: Add symbols for ch341

2 function symbol(s) added
  'int tty_put_char(struct tty_struct *, unsigned char)'
  'int tty_termios_hw_change(const struct ktermios *, const struct ktermios *)'

Bug: 239396464
Change-Id: I85afb346bbc82e2176680b2fa2facf51bbbb5bdb
Signed-off-by: Kever Yang <kever.yang@rock-chips.com>
Signed-off-by: Bian Jin chen <kenjc.bian@rock-chips.com>