stm32mp: add soc.c file

Add a new file soc.c for common functions between stm32mp1 and stm32mp2
family and move print_cpuinfo() in this new file.

Reviewed-by: Patrice Chotard <patrice.chotard@foss.st.com>
Signed-off-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
Reviewed-by: Igor Opaniuk <igor.opaniuk@foundries.io>

arch/arm/mach-stm32mp/Makefile

@@ -6,6 +6,7 @@
 obj-y += dram_init.o
 obj-y += syscon.o
 obj-y += bsec.o
+obj-y += soc.o
 
 obj-$(CONFIG_STM32MP15x) += stm32mp1/
 obj-$(CONFIG_STM32MP13x) += stm32mp1/

arch/arm/mach-stm32mp/soc.c

@@ -0,0 +1,19 @@
+// SPDX-License-Identifier: GPL-2.0-or-later OR BSD-3-Clause
+/*
+ * Copyright (C) 2024, STMicroelectronics - All Rights Reserved
+ */
+
+#include <env.h>
+#include <asm/arch/sys_proto.h>
+#include <dm/device.h>
+
+/* used when CONFIG_DISPLAY_CPUINFO is activated */
+int print_cpuinfo(void)
+{
+	char name[SOC_NAME_SIZE];
+
+	get_soc_name(name);
+	printf("CPU: %s\n", name);
+
+	return 0;
+}

arch/arm/mach-stm32mp/stm32mp1/cpu.c

@@ -158,17 +158,6 @@ void enable_caches(void)
 	dcache_enable();
 }
 
-/* used when CONFIG_DISPLAY_CPUINFO is activated */
-int print_cpuinfo(void)
-{
-	char name[SOC_NAME_SIZE];
-
-	get_soc_name(name);
-	printf("CPU: %s\n", name);
-
-	return 0;
-}
-
 static void setup_boot_mode(void)
 {
 	const u32 serial_addr[] = {

arch/arm/mach-stm32mp/stm32mp2/cpu.c

@@ -67,17 +67,6 @@ void enable_caches(void)
 	dcache_enable();
 }
 
-/* used when CONFIG_DISPLAY_CPUINFO is activated */
-int print_cpuinfo(void)
-{
-	char name[SOC_NAME_SIZE];
-
-	get_soc_name(name);
-	printf("CPU: %s\n", name);
-
-	return 0;
-}
-
 int arch_misc_init(void)
 {
 	return 0;