ARM: shmobile: defconfig: Refresh for v6.0-rc1

Refresh the defconfig for Renesas ARM systems:
  - Enable RZ/N1 A5PSW Ethernet switch support incl. dependencies
    (RZN1D-DB),
  - Move CONFIG_CAN_RCAR=y (moved in commit d7786af5 ("net:
    Kconfig: move the CAN device menu to the "Device Drivers"
    section")),
  - Enable RZ/N1 Gigabit Ethernet MAC support (RZN1D-DB),
  - Enable RZ/N1 Pin control support (RZN1D-DB),
  - Enable RZ/N1 DMA support incl. dependencies (RZN1D-DB).

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/428755447c1abbc8f1f08a63e83353d23ab22dd6.1661154821.git.geert+renesas@glider.be