perf tools: Include errno.h where needed

Removing it from util.h, part of an effort to disentangle the includes
hell, that makes changes to util.h or something included by it to cause
a complete rebuild of the tools.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-ztrjy52q1rqcchuy3rubfgt2@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

tools/perf/arch/arm64/util/dwarf-regs.c

@@ -8,6 +8,7 @@
  * published by the Free Software Foundation.
  */
 
+#include <errno.h>
 #include <stddef.h>
 #include <dwarf-regs.h>
 #include <linux/ptrace.h> /* for struct user_pt_regs */

tools/perf/arch/powerpc/util/kvm-stat.c

@@ -1,3 +1,4 @@
+#include <errno.h>
 #include "util/kvm-stat.h"
 #include "util/parse-events.h"
 #include "util/debug.h"

tools/perf/arch/powerpc/util/perf_regs.c

@@ -1,3 +1,4 @@
+#include <errno.h>
 #include <string.h>
 #include <regex.h>
 

tools/perf/arch/s390/util/kvm-stat.c

@@ -9,6 +9,7 @@
  * as published by the Free Software Foundation.
  */
 
+#include <errno.h>
 #include "../../util/kvm-stat.h"
 #include <asm/sie.h>
 

tools/perf/arch/x86/tests/intel-cqm.c

@@ -7,6 +7,7 @@
 #include "arch-tests.h"
 
 #include <sys/mman.h>
+#include <errno.h>
 #include <string.h>
 
 static pid_t spawn(void)

tools/perf/arch/x86/tests/perf-time-to-tsc.c

@@ -1,3 +1,4 @@
+#include <errno.h>
 #include <inttypes.h>
 #include <stdio.h>
 #include <unistd.h>

tools/perf/arch/x86/util/auxtrace.c

@@ -13,6 +13,7 @@
  *
  */
 
+#include <errno.h>
 #include <stdbool.h>
 
 #include "../../util/header.h"

tools/perf/arch/x86/util/intel-bts.c

@@ -13,6 +13,7 @@
  *
  */
 
+#include <errno.h>
 #include <linux/kernel.h>
 #include <linux/types.h>
 #include <linux/bitops.h>

tools/perf/arch/x86/util/intel-pt.c

@@ -13,6 +13,7 @@
  *
  */
 
+#include <errno.h>
 #include <stdbool.h>
 #include <linux/kernel.h>
 #include <linux/types.h>

tools/perf/arch/x86/util/kvm-stat.c

@@ -1,3 +1,4 @@
+#include <errno.h>
 #include "../../util/kvm-stat.h"
 #include <asm/svm.h>
 #include <asm/vmx.h>

tools/perf/arch/x86/util/perf_regs.c

@@ -1,3 +1,4 @@
+#include <errno.h>
 #include <string.h>
 #include <regex.h>
 

tools/perf/builtin-annotate.c

@@ -33,6 +33,7 @@
 #include "util/block-range.h"
 
 #include <dlfcn.h>
+#include <errno.h>
 #include <linux/bitmap.h>
 
 struct perf_annotate {

tools/perf/builtin-buildid-cache.c

@@ -10,6 +10,7 @@
 #include <sys/time.h>
 #include <time.h>
 #include <dirent.h>
+#include <errno.h>
 #include <unistd.h>
 #include "builtin.h"
 #include "perf.h"

tools/perf/builtin-buildid-list.c

@@ -16,6 +16,7 @@
 #include "util/session.h"
 #include "util/symbol.h"
 #include "util/data.h"
+#include <errno.h>
 
 static int sysfs__fprintf_build_id(FILE *fp)
 {

tools/perf/builtin-c2c.c

@@ -9,6 +9,7 @@
  *   Dick Fowles <fowles@inreach.com>
  *   Joe Mario <jmario@redhat.com>
  */
+#include <errno.h>
 #include <inttypes.h>
 #include <linux/compiler.h>
 #include <linux/kernel.h>

tools/perf/builtin-diff.c

@@ -19,6 +19,7 @@
 #include "util/data.h"
 #include "util/config.h"
 
+#include <errno.h>
 #include <inttypes.h>
 #include <stdlib.h>
 #include <math.h>

tools/perf/builtin-ftrace.c

@@ -9,6 +9,7 @@
 #include "builtin.h"
 #include "perf.h"
 
+#include <errno.h>
 #include <unistd.h>
 #include <signal.h>
 #include <fcntl.h>

tools/perf/builtin-help.c

@@ -13,6 +13,7 @@
 #include <subcmd/help.h>
 #include "util/debug.h"
 #include <linux/kernel.h>
+#include <errno.h>
 
 static struct man_viewer_list {
 	struct man_viewer_list *next;

tools/perf/builtin-inject.c

@@ -22,6 +22,7 @@
 #include <subcmd/parse-options.h>
 
 #include <linux/list.h>
+#include <errno.h>
 
 struct perf_inject {
 	struct perf_tool	tool;

tools/perf/builtin-kmem.c

@@ -23,6 +23,7 @@
 #include <linux/kernel.h>
 #include <linux/rbtree.h>
 #include <linux/string.h>
+#include <errno.h>
 #include <inttypes.h>
 #include <locale.h>
 #include <regex.h>