cfb_console: Fix function console_back
* Do not disable and enable the cursor again. console_back() is called only from video_putc() which already turns the cursor off at the beginning and turns it on at the end, so there is no need to change the cursor in console_back(). Signed-off-by: NPali Rohár <pali.rohar@gmail.com> Signed-off-by: NAnatolij Gustschin <agust@denx.de>
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