arm64: dts: imx8mp-kontron: Fix CAN_ADDR0 and CAN_ADDR1 GPIOs

arm64: dts: imx8mp-kontron: Fix CAN_ADDR0 and CAN_ADDR1 GPIOs

Some signal assignments were modified between hardware revisions
1 and 2:

Revision 1:

  - SPI_A_WP   -> CAN_ADDR0
  - SPI_A_HOLD -> CAN_ADDR1

Revision 2 and later:

  - SPI_A_SDI -> CAN_ADDR0
  - SPI_A_SDO -> CAN_ADDR1

Fix the labels and add the missing pinctrls.

Signed-off-by: Annette Kobou <annette.kobou@kontron.de>
Signed-off-by: Frieder Schrempf <frieder.schrempf@kontron.de>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>