x86, pic: Fix section mismatch in legacy pic

Move legacy_pic chip dummy functions out of init section as they might
be referenced at run time.
Signed-off-by: NJacob Pan <jacob.jun.pan@intel.com>
LKML-Reference: <43F901BD926A4E43B106BF17856F0755A318D3AA@orsmsx508.amr.corp.intel.com>
Signed-off-by: NH. Peter Anvin <hpa@zytor.com>

arch/x86/kernel/i8259.c

@@ -371,9 +371,9 @@ static void init_8259A(int auto_eoi)
  * platforms, such as x86 MID.
  */
 
-static void __init legacy_pic_noop(void) { };
-static void __init legacy_pic_uint_noop(unsigned int unused) { };
-static void __init legacy_pic_int_noop(int unused) { };
+static void legacy_pic_noop(void) { };
+static void legacy_pic_uint_noop(unsigned int unused) { };
+static void legacy_pic_int_noop(int unused) { };
 
 static struct irq_chip dummy_pic_chip  = {
 	.name = "dummy pic",