cs5535: drop the Geode-specific MFGPT/GPIO code

cs5535: drop the Geode-specific MFGPT/GPIO code

With generic modular drivers handling all of this stuff, the
geode-specific code can go away.  The cs5535-gpio, cs5535-mfgpt, and
cs5535-clockevt drivers now handle this.

Signed-off-by: Andres Salomon <[email protected]>
Cc: Jordan Crouse <[email protected]>
Cc: Ingo Molnar <[email protected]>
Cc: Thomas Gleixner <[email protected]>
Cc: john stultz <[email protected]>
Cc: Chris Ball <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>