USB: kobil_sct: trivial backport to fix libct

USB: kobil_sct: trivial backport to fix libct

Backport of a patch by Alan Cox <alan@lxorguk.ukuu.org.uk> in the kernel tree
with commit 94d0f7eac77a84da2cee41b8038796891f75f09e

Original comments:
	USB: kobil_sct: Rework driver

	No hardware but this driver is currently totally broken so we can't make
	it much worse. Remove all tbe broken invalid termios handling and replace
	it with a proper set_termios method.

Frank's comments:
	Without this patch the userspace libct (to access the cardreader)
	segfaults.

Signed-off-by: Frank Seidel <fseidel@suse.de>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>