[PATCH 1/6] gxfb: create DC/VP/FP-specific handlers rather thanusing readl/writel

[Andres Salomon]

Note: this is a continuation of prior gxfb patches, and also depends upon the
MSR cleanup patch.  All those patches can be found here:

http://git.infradead.org/?p=geode.git;a=summary

This one's simply a cleanup patch.