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>

env/Kconfig

@@ -759,6 +759,7 @@ config SCSI_ENV_PART_UUID
 
 config ENV_USE_DEFAULT_ENV_TEXT_FILE
 	bool "Create default environment from file"
+	depends on !COMPILE_TEST
 	help
 	  Normally, the default environment is automatically generated
 	  based on the settings of various CONFIG_* options, as well