pata_sis.c: Add Packard Bell EasyNote K5305 to laptops

With newer kernels HDD in my old laptop is limited to UDMA 33.
With this patch I get UDMA 100 again.

Signed-off-by: Gabriel Craciunescu <nix.or.die@googlemail.com>
Signed-off-by: Tejun Heo <htejun@gmail.com>