ARM: shmobile: defconfig: Refresh for v5.13-rc1

Refresh the defconfig for Renesas ARM systems:
  - Drop CONFIG_RESET_CONTROLLER=y (auto-enabled since commit
    b4d86f37 ("mmc: renesas_sdhi: do hard reset if possible")).

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/debe6340e9deb2f13f908238f27b62ed7b6005a0.1620806548.git.geert+renesas@glider.be