dt-bindings: mtd: ti,gpmc-nand: Add missing 'rb-gpios'

With 'unevaluatedProperties' support implemented, the TI GPMC example
has a warning:

Documentation/devicetree/bindings/memory-controllers/ti,gpmc.example.dt.yaml: nand@0,0: Unevaluated properties are not allowed ('rb-gpios' was unexpected)

Add the missing definition for 'rb-gpios'.

Cc: Miquel Raynal <[email protected]>
Cc: Richard Weinberger <[email protected]>
Cc: Vignesh Raghavendra <[email protected]>
Cc: Tony Lindgren <[email protected]>
Cc: Roger Quadros <[email protected]>
Cc: [email protected]
Signed-off-by: Rob Herring <[email protected]>
Reviewed-by: Thierry Reding <[email protected]>
Reviewed-by: Roger Quadros <[email protected]>
Signed-off-by: Miquel Raynal <[email protected]>
Link: https://lore.kernel.org/linux-mtd/[email protected]

0 files changed, 0 insertions, 0 deletions