packages/lm-sensors: fix compilation with musl

Fixes:
http://autobuild.buildroot.net/results/f72/f72ae17cea910a1dbd3d5d4d09cfbc90d9ba8dc0/

Imports a patch from Alpine Linux to remove __GLIBC__ conditional
compilation. Retested with both musl, glibc and uclibc.

Patch accepted upstream.

Signed-off-by: Brendan Heading <brendanheading@gmail.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/lm-sensors/0003-musl-fix-includes.patch

@@ -0,0 +1,100 @@
+From 6d85773537c9f277ed342f57500f784ccb2c4a3e Mon Sep 17 00:00:00 2001
+From: Brendan Heading <brendanheading@gmail.com>
+Date: Sun, 30 Aug 2015 22:26:39 +0100
+Subject: [PATCH 1/1] fix compilation under musl
+
+This patch removes conditional compilation elements that are designed to
+support glibc versions earlier than 2.0, which were causing the build
+to fail under musl.
+
+Based on the patch found here :
+
+http://git.alpinelinux.org/cgit/aports/plain/main/lm_sensors/musl-fix-includes.patch?id=fece1d19448dbd3a56fd8ac70443116187141848
+
+This patch has been accepted for integration upstream and should be
+present in the next release. See :
+
+http://www.lm-sensors.org/changeset/6314
+
+Signed-off-by: Brendan Heading <brendanheading@gmail.com>
+Upstream-Status: pending
+---
+ prog/dump/isadump.c | 6 ------
+ prog/dump/isaset.c  | 6 ------
+ prog/dump/superio.c | 5 -----
+ prog/dump/util.c    | 5 -----
+ 4 files changed, 22 deletions(-)
+
+diff --git a/prog/dump/isadump.c b/prog/dump/isadump.c
+index e031e47..88e4c3b 100644
+--- a/prog/dump/isadump.c
++++ b/prog/dump/isadump.c
+@@ -36,13 +36,7 @@
+ #include "util.h"
+ #include "superio.h"
+ 
+-
+-/* To keep glibc2 happy */
+-#if defined(__GLIBC__) && __GLIBC__ == 2 && __GLIBC_MINOR__ >= 0
+ #include <sys/io.h>
+-#else
+-#include <asm/io.h>
+-#endif
+ 
+ #ifdef __powerpc__
+ unsigned long isa_io_base = 0; /* XXX for now */
+diff --git a/prog/dump/isaset.c b/prog/dump/isaset.c
+index 1d1bdad..a084c8a 100644
+--- a/prog/dump/isaset.c
++++ b/prog/dump/isaset.c
+@@ -32,13 +32,7 @@
+ #include <string.h>
+ #include "util.h"
+ 
+-
+-/* To keep glibc2 happy */
+-#if defined(__GLIBC__) && __GLIBC__ == 2 && __GLIBC_MINOR__ >= 0
+ #include <sys/io.h>
+-#else
+-#include <asm/io.h>
+-#endif
+ 
+ #ifdef __powerpc__
+ unsigned long isa_io_base = 0; /* XXX for now */
+diff --git a/prog/dump/superio.c b/prog/dump/superio.c
+index 1af7358..31e0d78 100644
+--- a/prog/dump/superio.c
++++ b/prog/dump/superio.c
+@@ -20,12 +20,7 @@
+ */
+ 
+ #include <stdlib.h>
+-
+-#if defined(__GLIBC__) && __GLIBC__ == 2 && __GLIBC_MINOR__ >= 0
+ #include <sys/io.h>
+-#else
+-#include <asm/io.h>
+-#endif
+ 
+ #include "superio.h"
+ 
+diff --git a/prog/dump/util.c b/prog/dump/util.c
+index 676c339..d8b0927 100644
+--- a/prog/dump/util.c
++++ b/prog/dump/util.c
+@@ -11,12 +11,7 @@
+ #include <stdio.h>
+ #include "util.h"
+ 
+-/* To keep glibc2 happy */
+-#if defined(__GLIBC__) && __GLIBC__ == 2 && __GLIBC_MINOR__ >= 0
+ #include <sys/io.h>
+-#else
+-#include <asm/io.h>
+-#endif
+ 
+ /* Return 1 if we should continue, 0 if we should abort */
+ int user_ack(int def)
+-- 
+2.4.3
+