Revert "staging: ks7010: Fix build error"

This reverts commit 3e5bc68f as it
causes build errors in linux-next.

Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Cc: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>