linux-phytec-ti

viafb: remove duplicated clock information

This patch removes the direct lookup table for resolution+refresh and
pixclock by calculating this information from the mode table. Removes a
lot of dupllication and error potential by just doing a little more
calculations on each mode change.

Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>