ARM: uniphier: make boot_is_swapped() code optional
The planned new SoC does not have SBC (System Bus Controller) block.
Make boot_is_swapped() an optional hook.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
diff --git a/arch/arm/mach-uniphier/sbc/Makefile b/arch/arm/mach-uniphier/sbc/Makefile
index 4efdd41..6c698a3 100644
--- a/arch/arm/mach-uniphier/sbc/Makefile
+++ b/arch/arm/mach-uniphier/sbc/Makefile
@@ -1,6 +1,6 @@
# SPDX-License-Identifier: GPL-2.0+
-obj- += dummy.o
+obj-y += sbc-boot.o
ifndef CONFIG_SPL_BUILD
obj-y += sbc.o