usb: typec: tcpci: use GENMASK() for TCPC_ROLE_CTRL_RP_VAL

Align the last remaining field TCPC_ROLE_CTRL_RP_VAL with the other
fields in the TCPC_ROLE_CTRL register by using GENMASK() and
FIELD_PREP().

Signed-off-by: André Draszik <andre.draszik@linaro.org>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Link: https://lore.kernel.org/r/20240710-tcpc-cleanup-v1-5-0ec1f41f4263@linaro.org


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>