arm: mach-imx: move snvs module

Commit 723f8359c1 ("imx: mx7: snvs: Add an SNVS init routine") noted
that the init_snvs() call likely applies to other i.MX processors, and
this has been found to be true for i.MX8MP.

Move snvs module for future re-use.

Signed-off-by: Ian Ray <ian.ray@gehealthcare.com>
diff --git a/arch/arm/mach-imx/Makefile b/arch/arm/mach-imx/Makefile
index 21d955b..0de207c 100644
--- a/arch/arm/mach-imx/Makefile
+++ b/arch/arm/mach-imx/Makefile
@@ -293,3 +293,5 @@
 
 obj-$(CONFIG_SPL_BOOTROM_SUPPORT) += spl_imx_romapi.o
 obj-$(CONFIG_IMX8_ROMAPI) += romapi.o
+
+obj-$(CONFIG_MX7) += snvs.o
diff --git a/arch/arm/mach-imx/mx7/Makefile b/arch/arm/mach-imx/mx7/Makefile
index f1436e2..fec228a 100644
--- a/arch/arm/mach-imx/mx7/Makefile
+++ b/arch/arm/mach-imx/mx7/Makefile
@@ -3,5 +3,5 @@
 # (C) Copyright 2015 Freescale Semiconductor, Inc.
 #
 
-obj-y	:= soc.o clock.o clock_slice.o ddr.o snvs.o
+obj-y	:= soc.o clock.o clock_slice.o ddr.o
 obj-$(CONFIG_ARMV7_PSCI)  += psci-mx7.o psci-suspend.o
diff --git a/arch/arm/mach-imx/mx7/snvs.c b/arch/arm/mach-imx/snvs.c
similarity index 100%
rename from arch/arm/mach-imx/mx7/snvs.c
rename to arch/arm/mach-imx/snvs.c
diff --git a/arch/arm/mach-imx/snvs.h b/arch/arm/mach-imx/snvs.h
new file mode 100644
index 0000000..4ce9781
--- /dev/null
+++ b/arch/arm/mach-imx/snvs.h
@@ -0,0 +1,6 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright 2018 Linaro
+ */
+
+void init_snvs(void);