dt-bindings: tegra: Convert Tegra PMC bindings to YAML

This patch converts text based Tegra PMC bindings document to YAML
schema for performing dt validation.

Tested-by: Dmitry Osipenko <[email protected]>
Reviewed-by: Dmitry Osipenko <[email protected]>
Reviewed-by: Rob Herring <[email protected]>
Signed-off-by: Sowjanya Komatineni <[email protected]>
Signed-off-by: Thierry Reding <[email protected]>

Author: Sowjanya Komatineni