m68k: defconfig: Update defconfigs for v6.7-rc1

  - Enable modular build of the new bcachefs filesystem,
  - Drop CONFIG_CRYPTO_MANAGER=y (auto-enabled since commit
    84534684 ("crypto: skcipher - Add dependency on ecb")),
  - Drop CONFIG_DEV_APPLETALK=m, CONFIG_IPDDP=m, and CONFIG_IPDDP_ENCAP=y
    (removed in commit 1dab4713

 ("appletalk: remove ipddp
    driver")).

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Link: https://lore.kernel.org/r/7abb82edd14ee77d985f3949a673c52bb2ee28b5.1699960088.git.geert@linux-m68k.org