Kconfig: Migrate BOARD_LATE_INIT to a select

This option should not really be user selectable.  Note that on PowerPC
we currently only need BOARD_LATE_INIT when CHAIN_OF_TRUST is enabled so be
conditional on that.

Signed-off-by: Tom Rini <trini@konsulko.com>
Acked-by: Masahiro Yamada <yamada.masahiro@socionext.com> (for UniPhier)
diff --git a/arch/arm/mach-kirkwood/Kconfig b/arch/arm/mach-kirkwood/Kconfig
index 9c24921..ddfae8c 100644
--- a/arch/arm/mach-kirkwood/Kconfig
+++ b/arch/arm/mach-kirkwood/Kconfig
@@ -33,6 +33,7 @@
 
 config TARGET_KM_KIRKWOOD
 	bool "KM_KIRKWOOD Board"
+	select BOARD_LATE_INIT
 
 config TARGET_NET2BIG_V2
 	bool "LaCie 2Big Network v2 NAS Board"