can: flexcan: rename macro FLEXCAN_QUIRK_SETUP_STOP_MODE -> FLEXCAN_QUIRK_SETUP_STOP_...

can: flexcan: rename macro FLEXCAN_QUIRK_SETUP_STOP_MODE -> FLEXCAN_QUIRK_SETUP_STOP_MODE_GPR

This patch intends to rename FLEXCAN_QUIRK_SETUP_STOP_MODE quirk
to FLEXCAN_QUIRK_SETUP_STOP_MODE_GRP for non-scu SoCs, coming patch will
add quirk for scu SoCs.

For non-scu SoCs, setup stop mode with GPR register.
For scu SoCs, setup stop mode with SCU firmware.

Signed-off-by: Joakim Zhang <qiangqing.zhang@nxp.com>
Link: https://lore.kernel.org/r/20201106105627.31061-4-qiangqing.zhang@nxp.com
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>