arm: rmobile: rcar: Move arch_preboot_os function to rcar-gen2-common/common.c
The arch_preboot_os function used in boards using R-Car ARM SoC (r8a7790,
r8a7791, r8a7793 and r8a7794) is common.
This makes rcar-gen2-common/common.c file providing common function for
R-Car ARM SoC, and moves this function to this file.
Signed-off-by: Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com>
Signed-off-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
diff --git a/board/renesas/koelsch/Makefile b/board/renesas/koelsch/Makefile
index b4d0183..c10bba5 100644
--- a/board/renesas/koelsch/Makefile
+++ b/board/renesas/koelsch/Makefile
@@ -6,4 +6,4 @@
# SPDX-License-Identifier: GPL-2.0
#
-obj-y := koelsch.o qos.o
+obj-y := koelsch.o qos.o ../rcar-gen2-common/common.o