common/Kconfig: Reword text for BOARD_TYPES

While it is true that for some Samsung platforms, we call
get_board_type() the main usage of this CONFIG switch is to enable
board_types in global data, which is then used by various platforms.

Signed-off-by: Tom Rini <trini@konsulko.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
1 file changed