ARM: tegra: Document sysfs params

Intoduction of cpuquiet framework broke tegra sysfs API. Document the new
sysfs interface.

Bug 894311
Bug 1031064

Change-Id: I6ef94921dd0807bfaeb3bf637a6c1b037d2a337f
Signed-off-by: Juha Tukkinen <jtukkinen@nvidia.com>
Reviewed-on: http://git-master/r/133467
Reviewed-by: Automatic_Commit_Validation_User
GVS: Gerrit_Virtual_Submit
Reviewed-by: Peter Boonstoppel <pboonstoppel@nvidia.com>
1 file changed