ACPICA: Linux: Allow ACPICA inclusion for CONFIG_ACPI=n builds.

This patch moves <acpi/acpi.h> out of CONFIG_ACPI condition so that all
ACPICA prototypes can be seen by the CONFIG_ACPI=n Linux kernel builds.
Note that we can do this because ACPICA has implemented stubs for all
ACPICA prototypes that are currently referenced by the Linux kernel.

Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

include/linux/acpi.h

@@ -29,17 +29,17 @@
 #include <linux/ioport.h>	/* for struct resource */
 #include <linux/device.h>
 
-#ifdef	CONFIG_ACPI
-
 #ifndef _LINUX
 #define _LINUX
 #endif
+#include <acpi/acpi.h>
+
+#ifdef	CONFIG_ACPI
 
 #include <linux/list.h>
 #include <linux/mod_devicetable.h>
 #include <linux/dynamic_debug.h>
 
-#include <acpi/acpi.h>
 #include <acpi/acpi_bus.h>
 #include <acpi/acpi_drivers.h>
 #include <acpi/acpi_numa.h>