s390/mm: Move KASLR related to <asm/page.h>

Move everyting KASLR related to <asm/page.h>,
similarly to many other architectures.
Acked-by: Heiko Carstens <hca@linux.ibm.com>
Suggested-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Alexander Gordeev <agordeev@linux.ibm.com>

arch/s390/include/asm/page.h

@@ -178,6 +178,20 @@ int arch_make_page_accessible(struct page *page);
 #define HAVE_ARCH_MAKE_PAGE_ACCESSIBLE
 #endif
 
+extern unsigned long __kaslr_offset;
+static inline unsigned long kaslr_offset(void)
+{
+	return __kaslr_offset;
+}
+
+extern int __kaslr_enabled;
+static inline int kaslr_enabled(void)
+{
+	if (IS_ENABLED(CONFIG_RANDOMIZE_BASE))
+		return __kaslr_enabled;
+	return 0;
+}
+
 #define __PAGE_OFFSET		0x0UL
 #define PAGE_OFFSET		0x0UL
 

arch/s390/include/asm/setup.h

@@ -127,20 +127,6 @@ extern void (*_machine_restart)(char *command);
 extern void (*_machine_halt)(void);
 extern void (*_machine_power_off)(void);
 
-extern unsigned long __kaslr_offset;
-static inline unsigned long kaslr_offset(void)
-{
-	return __kaslr_offset;
-}
-
-extern int __kaslr_enabled;
-static inline int kaslr_enabled(void)
-{
-	if (IS_ENABLED(CONFIG_RANDOMIZE_BASE))
-		return __kaslr_enabled;
-	return 0;
-}
-
 struct oldmem_data {
 	unsigned long start;
 	unsigned long size;