ell: upgrade to version 0.4

1. Upgrade to version 0.4 and rename from _git to exact version _0.4
2. Fix build issues with musl libc

Signed-off-by: Maxin B. John <maxin.john@intel.com>
Signed-off-by: Armin Kuster <akuster808@gmail.com>

meta-oe/recipes-core/ell/ell/0001-ell-fix-build-with-musl-libc.patch

@@ -0,0 +1,39 @@
+From 4f8c68757b05d12392cd1a8aed174cb8e56f80e3 Mon Sep 17 00:00:00 2001
+From: "Maxin B. John" <maxin.john@intel.com>
+Date: Thu, 5 Apr 2018 17:19:44 +0300
+Subject: [PATCH] ell: fix build with musl libc
+
+musl libc doesn't implement TEMP_FAILURE_RETRY. Use the
+TEMP_FAILURE_RETRY from glibc to fix build.
+
+Upstream-Status: Submitted [https://lists.01.org/pipermail/ell/2018-April/001209.html]
+
+Signed-off-by: Maxin B. John <maxin.john@intel.com>
+---
+ ell/dbus.h | 10 ++++++++++
+ 1 file changed, 10 insertions(+)
+
+diff --git a/ell/dbus.h b/ell/dbus.h
+index a7c08d2..3ff5e0f 100644
+--- a/ell/dbus.h
++++ b/ell/dbus.h
+@@ -28,6 +28,16 @@
+ #include <stddef.h>
+ #include <stdarg.h>
+ 
++/* taken from glibc unistd.h for musl support */
++#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
++
+ #ifdef __cplusplus
+ extern "C" {
+ #endif
+-- 
+2.4.0
+

meta-oe/recipes-core/ell/ell_0.4.bb

@@ -7,8 +7,10 @@ SECTION = "libs"
 inherit autotools pkgconfig
 
 S = "${WORKDIR}/git"
-SRCREV = "8192131685be0f27d6f51b14b78ef93fa7f3c692"
+SRCREV = "b4aea06fabb2af1af01f861f8f394c75950b6d47"
-SRC_URI = "git://git.kernel.org/pub/scm/libs/ell/ell.git"
+SRC_URI = "git://git.kernel.org/pub/scm/libs/ell/ell.git \
+           file://0001-ell-fix-build-with-musl-libc.patch \
+          "
 
 do_configure_prepend () {
     mkdir ${S}/build-aux