musl: Add TEMP_FAILURE_RETRY from glibc

Patch it into musl instead of patching all users
(currently elfutils and next ofono).

(From OE-Core rev: 0c68c621d3b8690e3a346170006f75b032511a8a)

Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-core/musl/musl/0001-unistd.h-Add-TEMP_FAILURE_RETRY.patch

@@ -0,0 +1,36 @@
+From 19cbebc3fa33c6a1a71a6036da4d67c98f859f06 Mon Sep 17 00:00:00 2001
+From: Adrian Bunk <bunk@stusta.de>
+Date: Wed, 15 May 2019 16:08:33 +0300
+Subject: unistd.h: Add TEMP_FAILURE_RETRY
+
+Signed-off-by: Adrian Bunk <bunk@stusta.de>
+Upstream-Status: Inappropriate [oe-specific]
+---
+ include/unistd.h | 11 +++++++++++
+ 1 file changed, 11 insertions(+)
+
+diff --git a/include/unistd.h b/include/unistd.h
+index 9485da7a..8a75af57 100644
+--- a/include/unistd.h
++++ b/include/unistd.h
+@@ -460,6 +460,17 @@ int eaccess(const char *, int);
+ #define _CS_V6_ENV	1148
+ #define _CS_V7_ENV	1149
+ 
++#ifdef _GNU_SOURCE
++#ifndef TEMP_FAILURE_RETRY
++# define TEMP_FAILURE_RETRY(expression) \
++  (__extension__                                                              \
++    ({ long int __result;                                                     \
++       do __result = (long int) (expression);                                 \
++       while (__result == -1L && errno == EINTR);                             \
++       __result; }))
++#endif
++#endif
++
+ #ifdef __cplusplus
+ }
+ #endif
+-- 
+2.20.1
+

meta/recipes-core/musl/musl_git.bb

@@ -15,6 +15,7 @@ PV = "${BASEVER}+git${SRCPV}"
 SRC_URI = "git://git.musl-libc.org/musl \
            file://0001-Make-dynamic-linker-a-relative-symlink-to-libc.patch \
            file://0002-ldso-Use-syslibdir-and-libdir-as-default-pathes-to-l.patch \
+           file://0001-unistd.h-Add-TEMP_FAILURE_RETRY.patch \
           "
 
 S = "${WORKDIR}/git"

meta/recipes-devtools/elfutils/files/0008-build-Provide-alternatives-for-glibc-assumptions-hel.patch

@@ -64,18 +64,10 @@ index 292082b..308a762 100644
  #include <stddef.h>
  #include <stdint.h>
  #include <sys/param.h>
-@@ -51,6 +51,16 @@
+@@ -51,6 +51,8 @@
  #else
  # error "Unknown byte order"
  #endif
-+#ifndef TEMP_FAILURE_RETRY
-+#define TEMP_FAILURE_RETRY(expression) \
-+  (__extension__							      \
-+    ({ long int __result;						      \
-+       do __result = (long int) (expression);				      \
-+       while (__result == -1L && errno == EINTR);			      \
-+       __result; }))
-+#endif
 +
 +#define error(status, errno, ...) err(status, __VA_ARGS__)
  
@@ -141,26 +133,6 @@ index 56e6105..f4a0649 100644
  #include "../libdw/libdwP.h"	/* DWARF_E_* values are here.  */
  #include "../libelf/libelfP.h"
  #include "system.h"
-diff --git a/libdwfl/libdwfl_crc32_file.c b/libdwfl/libdwfl_crc32_file.c
-index f849128..6f0aca1 100644
---- a/libdwfl/libdwfl_crc32_file.c
-+++ b/libdwfl/libdwfl_crc32_file.c
-@@ -29,6 +29,15 @@
- # include <config.h>
- #endif
- 
-+#ifndef TEMP_FAILURE_RETRY
-+#define TEMP_FAILURE_RETRY(expression) \
-+  (__extension__                                                             \
-+    ({ long int __result;                                                    \
-+       do __result = (long int) (expression);                                \
-+       while (__result == -1L && errno == EINTR);                            \
-+       __result; }))
-+#endif
-+
- #define crc32_file attribute_hidden __libdwfl_crc32_file
- #define crc32 __libdwfl_crc32
- #include <libdwflP.h>
 diff --git a/libdwfl/linux-kernel-modules.c b/libdwfl/linux-kernel-modules.c
 index 360e4ee..b5aa397 100644
 --- a/libdwfl/linux-kernel-modules.c