GitLab

- add ich_fill_data to fill the chipset registers from an array
- add ich_read_data to copy the data from the chipset register into an array
- replace the existing code with calls to those functions
- minor cosmetic changes

Corresponding to flashrom svn r1409.
Signed-off-by: Stefan Tauner <stefan.tauner@alumni.tuwien.ac.at>
Acked-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net>