[RFC v1] clk: Add debugfs nodes for enable/disable/set-rate/set-parent

Pankaj Dev [off-list ref] writes:

1. clk_set_rate : Set new rate to value. Reading returns the
current rate

If you can use this to set *and* read it, then "_set_" shouldn't be in
the name.

What is wrong with using the existing "clk_rate" for reading/setting the
rate?