ACPICA: Add ACPI_INLINE configuration parameter

The C inline keyword is not standardized, ACPI_INLINE allows this
to be configured on a per-compiler basis.

Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
diff --git a/include/acpi/platform/acenv.h b/include/acpi/platform/acenv.h
index c05aeba..a3e334a 100644
--- a/include/acpi/platform/acenv.h
+++ b/include/acpi/platform/acenv.h
@@ -193,6 +193,12 @@
 #define ACPI_MUTEX_TYPE             ACPI_BINARY_SEMAPHORE
 #endif
 
+/* "inline" keywords - configurable since inline is not standardized */
+
+#ifndef ACPI_INLINE
+#define ACPI_INLINE
+#endif
+
 /*
  * Debugger threading model
  * Use single threaded if the entire subsystem is contained in an application