init: annotate all command line parameter infrastructure as const

There is no reason for any of it to be modified.  Additionally, link
.init.setup beside the other constant .init data.

No functional change.

Signed-off-by: Andrew Cooper <andrew.cooper3@citrix.com>
[jb: reduce alignments to 8]
Reviewed-by: Jan Beulich <jbeulich@suse.com>
Reviewed-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>

xen/arch/arm/xen.lds.S

@@ -115,6 +115,12 @@ SECTIONS
   .init.data : {
        *(.init.rodata)
        *(.init.rodata.str*)
+
+       . = ALIGN(8);
+       __setup_start = .;
+       *(.init.setup)
+       __setup_end = .;
+
        *(.init.data)
        *(.init.data.rel)
        *(.init.data.rel.*)
@@ -125,11 +131,6 @@ SECTIONS
        __ctors_end = .;
   } :text
   . = ALIGN(32);
-  .init.setup : {
-       __setup_start = .;
-       *(.init.setup)
-       __setup_end = .;
-  } :text
   .init.proc.info : {
        __proc_info_start = .;
        *(.init.proc.info)

xen/arch/x86/xen.lds.S

@@ -120,6 +120,12 @@ SECTIONS
   .init.data : {
        *(.init.rodata)
        *(.init.rodata.str*)
+
+       . = ALIGN(8);
+       __setup_start = .;
+       *(.init.setup)
+       __setup_end = .;
+
        *(.init.data)
        *(.init.data.rel)
        *(.init.data.rel.*)
@@ -146,11 +152,6 @@ SECTIONS
        __ctors_end = .;
   } :text
   . = ALIGN(32);
-  .init.setup : {
-       __setup_start = .;
-       *(.init.setup)
-       __setup_end = .;
-  } :text
   .initcall.init : {
        __initcall_start = .;
        *(.initcallpresmp.init)

xen/include/xen/init.h

@@ -87,8 +87,8 @@ struct kernel_param {
 
 extern struct kernel_param __setup_start, __setup_end;
 
-#define __setup_str static __initdata __attribute__((__aligned__(1))) char
-#define __kparam static __initsetup struct kernel_param
+#define __setup_str static const __initconst __attribute__((__aligned__(1))) char
+#define __kparam static const __initsetup struct kernel_param
 
 #define custom_param(_name, _var) \
     __setup_str __setup_str_##_var[] = _name; \