config: revert options initially selected by EXT4_ENCRYPTION
    
    EXT4_ENCRYPTION was initially a bool, which caused anything
    selected by it to be selected as =y even if EXT4 was =m.
    
    We can restore the following options back to being modular:
    - CRYPTO_CTS
    - CRYPTO_ECB
    - CRYPTO_GF128MUL
    - CRYPTO_XTS
    
    Other crypto-related options enabled in the v4.1-rc1 update are
    a result of INTEGRITY=y and can't be returned to modular options
    without also disabling INTEGRITY.