staging/gasket: Fix string split

This patch removes unnecessary quoted string splits.

Co-developed-by: Jie Zhang <zhangjie.cnde@gmail.com>
Signed-off-by: Jie Zhang <zhangjie.cnde@gmail.com>
Signed-off-by: Tianzheng Li <ltz0302@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>