libtirpc: turn last patch into a Git formatted patch

This commit modifies the last libtirpc patch to be a Git formatted
patch, i.e that can easily be imported using 'git am'.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

package/libtirpc/0007-pkg-config-needs-pthread-as-private-library.patch

@@ -1,4 +1,7 @@
-pkg-config: needs pthread as private library
+From 308705710d40ced3ea2a913d24ab99cc61bef01f Mon Sep 17 00:00:00 2001
+From: "Yann E. MORIN" <yann.morin.1998@free.fr>
+Date: Sun, 5 Apr 2015 18:11:25 +0200
+Subject: [PATCH] pkg-config: needs pthread as private library
 
 libtirpc needs pthreads. This is automatically pulled in when linking
 with the shared library, thanks to the DT_NEEDED ELF tags.
@@ -9,17 +12,25 @@ required libraries.
 Thus, add -pthread to the private libraries in the pkg-config file.
 
 Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
-
 ---
 Patch sent upstream:
     http://sourceforge.net/p/libtirpc/mailman/message/33072076/
 
-diff -durN libtirpc-0.2.4.orig/libtirpc.pc.in libtirpc-0.2.4/libtirpc.pc.in
+Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
---- libtirpc-0.2.4.orig/libtirpc.pc.in	2013-12-09 21:59:51.000000000 +0100
+---
-+++ libtirpc-0.2.4/libtirpc.pc.in	2014-11-23 14:02:58.677760108 +0100
+ libtirpc.pc.in | 1 +
-@@ -8,4 +8,5 @@
+ 1 file changed, 1 insertion(+)
+
+diff --git a/libtirpc.pc.in b/libtirpc.pc.in
+index ec4cf75..1dc85ea 100644
+--- a/libtirpc.pc.in
++++ b/libtirpc.pc.in
+@@ -8,4 +8,5 @@ Description: Transport Independent RPC Library
  Requires:
  Version: @PACKAGE_VERSION@
  Libs: -L@libdir@ -ltirpc
 +Libs.private: -pthread
  Cflags: -I@includedir@/tirpc
+-- 
+2.1.0
+