kernel.h: remove ancient __FUNCTION__ hack

__FUNCTION__ hasn't been treated as a string literal since gcc 3.4, so
this only helps people who only test-compile using 3.3 (compiler-gcc3.h
barks at anything older than that).  Besides, there are almost no
occurrences of __FUNCTION__ left in the tree.

[akpm@linux-foundation.org: convert remaining __FUNCTION__ references]
Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Cc: Michal Nazarewicz <mina86@mina86.com>
Cc: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/include/acpi/acoutput.h b/include/acpi/acoutput.h
index 9318a87..a8f3443 100644
--- a/include/acpi/acoutput.h
+++ b/include/acpi/acoutput.h
@@ -240,7 +240,7 @@
 /*
  * If ACPI_GET_FUNCTION_NAME was not defined in the compiler-dependent header,
  * define it now. This is the case where there the compiler does not support
- * a __FUNCTION__ macro or equivalent.
+ * a __func__ macro or equivalent.
  */
 #ifndef ACPI_GET_FUNCTION_NAME
 #define ACPI_GET_FUNCTION_NAME          _acpi_function_name
@@ -249,12 +249,12 @@
  * The Name parameter should be the procedure name as a quoted string.
  * The function name is also used by the function exit macros below.
  * Note: (const char) is used to be compatible with the debug interfaces
- * and macros such as __FUNCTION__.
+ * and macros such as __func__.
  */
 #define ACPI_FUNCTION_NAME(name)        static const char _acpi_function_name[] = #name;
 
 #else
-/* Compiler supports __FUNCTION__ (or equivalent) -- Ignore this macro */
+/* Compiler supports __func__ (or equivalent) -- Ignore this macro */
 
 #define ACPI_FUNCTION_NAME(name)
 #endif				/* ACPI_GET_FUNCTION_NAME */