[PATCH v2] SFI: fix compilation warnings

[Andy Shevchenko <andriy.shevchenko@linux.intel.com>]

When build kernel with make W=1 we get the following compiler error.

In file included from drivers/sfi/sfi_acpi.c:66:0:
include/linux/sfi_acpi.h: In function ‘acpi_sfi_table_parse’:
include/linux/sfi_acpi.h:72:2: error: implicit declaration of function ‘acpi_table_parse’ [-Werror=implicit-function-declaration]
  if (!acpi_table_parse(signature, handler))
  ^
  cc1: some warnings being treated as errors

The patch add linux/acpi.h to the top of file.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
---
Changes to v2:
- fix for build when ACPI=n, SFI=y
 drivers/sfi/sfi_acpi.c   | 2 +-
 include/linux/sfi_acpi.h | 4 +++-
 2 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/sfi/sfi_acpi.c b/drivers/sfi/sfi_acpi.c
index 5e753d7..5589ec5 100644
--- a/drivers/sfi/sfi_acpi.c
+++ b/drivers/sfi/sfi_acpi.c
@@ -60,7 +60,7 @@
 #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
 
 #include <linux/kernel.h>
-#include <acpi/acpi.h>	/* FIXME: inclusion should be removed */
+#include <linux/acpi.h>
 
 #include <linux/sfi.h>
 #include "sfi_core.h"
diff --git a/include/linux/sfi_acpi.h b/include/linux/sfi_acpi.h
index 2cfcb79..ecc2344 100644
--- a/include/linux/sfi_acpi.h
+++ b/include/linux/sfi_acpi.h
@@ -60,7 +60,9 @@
 #define _LINUX_SFI_ACPI_H
 
 #ifdef CONFIG_SFI
-#include <acpi/acpi.h>	/* FIXME: inclusion should be removed */
+
+#include <acpi/acpi.h>
+#include <linux/acpi.h>
 
 extern int sfi_acpi_table_parse(char *signature, char *oem_id,
 				char *oem_table_id,
-- 
1.8.4.4