Use pinctrl@ naming for nodes following standard conventions of device
tree (section 2.2.2 Generic Names recommendation in [1]).

[1] https://github.com/devicetree-org/devicetree-specification/tree/v0.3Suggested-by: NSuman Anna <s-anna@ti.com>
Signed-off-by: NNishanth Menon <nm@ti.com>
Reviewed-by: NLokesh Vutla <lokeshvutla@ti.com>
Acked-by: NSuman Anna <s-anna@ti.com>
Link: https://lore.kernel.org/r/20200903130015.21361-6-nm@ti.com