[PATCH] ARM: i.MX: add Kconfig option for scratchmem

[Sascha Hauer <s.hauer@pengutronix.de>]

scratch.c is needed for both i.MX8 and i.MX9, but is compiled only for
i.MX8, so linking will failed if only i.MX9 is enabled.
Add a Kconfig option for it and select it from both i.MX8 and i.MX9.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
---
 arch/arm/mach-imx/Kconfig  | 4 ++++
 arch/arm/mach-imx/Makefile | 3 ++-
 2 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/arch/arm/mach-imx/Kconfig b/arch/arm/mach-imx/Kconfig
index b6936a7554..a87ba1cef0 100644
--- a/arch/arm/mach-imx/Kconfig
+++ b/arch/arm/mach-imx/Kconfig
@@ -42,6 +42,10 @@ config ARCH_IMX_ROMAPI
 	def_bool y
 	depends on ARCH_IMX8M || ARCH_IMX9
 
+config ARCH_IMX_SCRATCHMEM
+	def_bool y
+	depends on ARCH_IMX8M || ARCH_IMX9
+
 #
 # PMIC configuration found on i.MX51 Babbadge board
 #
diff --git a/arch/arm/mach-imx/Makefile b/arch/arm/mach-imx/Makefile
index 9505cffa81..ce8af486ae 100644
--- a/arch/arm/mach-imx/Makefile
+++ b/arch/arm/mach-imx/Makefile
@@ -17,7 +17,8 @@ CFLAGS_imx6.o := -march=armv7-a
 lwl-$(CONFIG_ARCH_IMX6) += imx6-mmdc.o
 obj-$(CONFIG_ARCH_IMX7) += imx7.o
 obj-$(CONFIG_ARCH_VF610) += vf610.o
-obj-pbl-$(CONFIG_ARCH_IMX8M) += imx8m.o scratch.o
+obj-pbl-$(CONFIG_ARCH_IMX8M) += imx8m.o
+obj-pbl-$(CONFIG_ARCH_IMX_SCRATCHMEM) += scratch.o
 obj-$(CONFIG_ARCH_IMX9) += imx9.o
 lwl-$(CONFIG_ARCH_IMX_ATF) += atf.o
 obj-pbl-$(CONFIG_ARCH_IMX8M) += tzasc.o
-- 
2.39.2