Add stop mode support for i.MX8QM.

ChangeLogs:
V4->V5:
        * remove patch:firmware: imx: always export SCU symbols, since
        it done by commit: 95de5094f5ac firmware: imx: add dummy functions
        * rebase to fsl,flexcan.yaml

V3->V4:
        * can_idx->scu_idx.
        * return imx_scu_get_handle(&priv->sc_ipc_handle);
        * failed_canregister->failed_setup_stop_mode.

V2->V3:
        * define IMX_SC_R_CAN(x) in rsrc.h
        * remove error message on -EPROBE_DEFER.
        * split disable wakeup patch into separate one.

V1->V2:
        * split ECC fix patches into separate patches.
        * free can dev if failed to setup stop mode.
        * disable wakeup on flexcan_remove.
        * add FLEXCAN_IMX_SC_R_CAN macro helper.
        * fsl,can-index->fsl,scu-index.
        * move fsl,scu-index and priv->can_idx into
        * flexcan_setup_stop_mode_scfw()
        * prove failed if failed to setup stop mode.

Joakim Zhang (5):
  dt-bindings: can: flexcan: fix fsl,clk-source property
  dt-bindings: can: flexcan: add fsl,scu-index property to indicate a
    resource
  can: flexcan: rename macro FLEXCAN_QUIRK_SETUP_STOP_MODE ->
    FLEXCAN_QUIRK_SETUP_STOP_MODE_GPR
  dt-bindings: firmware: add IMX_SC_R_CAN(x) macro for CAN
  can: flexcan: add CAN wakeup function for i.MX8QM

 .../bindings/net/can/fsl,flexcan.yaml         |  15 +-
 drivers/net/can/flexcan.c                     | 131 +++++++++++++++---
 include/dt-bindings/firmware/imx/rsrc.h       |   1 +
 3 files changed, 124 insertions(+), 23 deletions(-)

-- 
2.17.1

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