tools headers: Get tools's linux/compiler.h closer to the kernel's

We're cherry picking stuff from the kernel to allow for the other
headers that we keep in sync via tools/perf/check-headers.sh to work,
so introduce linux/compiler_types.h and from there get the compiler
specific stuff.

Cc: Adrian Hunter <[email protected]>
Cc: Ian Rogers <[email protected]>
Cc: Jiri Olsa <[email protected]>
Cc: Namhyung Kim <[email protected]>
Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>

tools/include/linux/compiler.h

@@ -2,9 +2,7 @@
 #ifndef _TOOLS_LINUX_COMPILER_H_
 #define _TOOLS_LINUX_COMPILER_H_
 
-#ifdef __GNUC__
-#include <linux/compiler-gcc.h>
-#endif
+#include <linux/compiler_types.h>
 
 #ifndef __compiletime_error
 # define __compiletime_error(message)

tools/include/linux/compiler_types.h

@@ -0,0 +1,10 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef __LINUX_COMPILER_TYPES_H
+#define __LINUX_COMPILER_TYPES_H
+
+/* Compiler specific macros. */
+#ifdef __GNUC__
+#include <linux/compiler-gcc.h>
+#endif
+
+#endif /* __LINUX_COMPILER_TYPES_H */