xen: resolve section mismatch warnings in xen-acpi-processor

The following resolves a section mismatch warning below in xen-acpi-processor introduced by
3fac10145b766a2244422788f62dc35978613fd8 [13/13] xen: Re-upload processor PM data to hypervisor after S3 resume (v2)

Warning:
WARNING: drivers/xen/built-in.o(.text+0x2056a): Section mismatch in reference from the function xen_upload_processor_pm_data() to the function .init.text:read_acpi_id()
   The function xen_upload_processor_pm_data() references
   the function __init read_acpi_id().
   This is often because xen_upload_processor_pm_data lacks a __init
   annotation or the annotation of read_acpi_id is wrong.

Reported-by: kbuild test robot <fengguang.wu@intel.com>

Signed-off-by: Ben Guthro <benjamin.guthro@citrix.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>

drivers/xen/xen-acpi-processor.c

@@ -330,7 +330,7 @@ static unsigned int __init get_max_acpi_id(void)
  * for_each_[present|online]_cpu macros which are banded to the virtual
  * CPU amount.
  */
-static acpi_status __init
+static acpi_status
 read_acpi_id(acpi_handle handle, u32 lvl, void *context, void **rv)
 {
 	u32 acpi_id;
@@ -385,7 +385,7 @@ read_acpi_id(acpi_handle handle, u32 lvl, void *context, void **rv)
 
 	return AE_OK;
 }
-static int __init check_acpi_ids(struct acpi_processor *pr_backup)
+static int check_acpi_ids(struct acpi_processor *pr_backup)
 {
 
 	if (!pr_backup)