m68k: defconfig: Update defconfigs for v5.5-rc3

  - Enable modular build of new crypto algorithms:
      - CONFIG_CRYPTO_BLAKE2S=m,
      - CONFIG_CRYPTO_CURVE25519=m,
      - CONFIG_CRYPTO_LIB_BLAKE2S=m,
      - CONFIG_CRYPTO_LIB_CHACHA20POLY1305=m,
      - CONFIG_CRYPTO_LIB_CURVE25519=m.
  - Remove CONFIG_CRYPTO_XXHASH=m (auto-selected by CONFIG_BTRFS_FS
    since commit 3951e7f0 ("btrfs: add xxhash64 to checksumming
    algorithms"),
  - Move CONFIG_EARLY_PRINTK.

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>