Samsung clock changes

[Ben Dooks]

Initial run of clock changes, only tested past the 'they build'
stage. If someone else can test and report success then that
would be helpful.

git branch next-samsung-clock will get you these plus most of
the other s3c64xx and s3c24xx changes since 2.6.32-rc7.

As such the s5pc1xx code has only be touched as far as fixing
the merge problems with the update 'clk_ops' code and has yet
to have the common clksrc code patches applied to it.