Kconfig: Test for !COMPILE_TEST in some locations

Kconfig: Test for !COMPILE_TEST in some locations

We have a few options that we cannot enable in a "allyesconfig" type
build because we cannot use zero as a default value.

- The logic around HAS_BOARD_SIZE_LIMIT assumes that if we have set this
  then we compare with it. Similarly, we need to set SPL_NO_BSS_LIMIT as
  the default there.
- Both SYS_CUSTOM_LDSCRIPT and ENV_USE_DEFAULT_ENV_TEXT_FILE then prompt
  for a file name to use.
- The SYS_I2C_SOFT driver is a legacy driver which requires a lot of
  configuration within the board config. file instead, so disable it.

Signed-off-by: Tom Rini <trini@konsulko.com>