staging: ks7010: change if-else condition assignment to use ternary operator

This commit changes an if-else block used to just assign a
variable to use a ternary operator to do the same improving
readability.

Signed-off-by: Sergio Paracuellos <sergio.paracuellos@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>