Move patch applicaiton into install

This package is a bit special, because we've got no buildroot.
To address this th epatch is applied to the installed header file.
Thus we need to run the patch cmd after the installation.

Signed-off-by: Fabian Deutsch <fabiand@fedoraproject.org>

arm-nosse2.patch

@@ -1,5 +1,5 @@
---- cl.hpp.orig	2014-04-25 09:53:03.029286394 +0200
-+++ cl.hpp	2014-04-25 09:55:06.330122827 +0200
+--- cl.hpp	2014-04-25 09:53:03.029286394 +0200
++++ cl.hpp.mod	2014-04-25 09:55:06.330122827 +0200
 @@ -212,8 +212,11 @@
  #if defined(linux) || defined(__APPLE__) || defined(__MACOSX)
  #include <alloca.h>

opencl-headers.spec

@@ -25,7 +25,7 @@ Khronos OpenCL development headers
 
 
 %prep
-%patch0 -b .arm-nosse2
+
 
 %build
 
@@ -45,6 +45,9 @@ cp \
 	%{SOURCE9} \
 	$RPM_BUILD_ROOT%{_includedir}/CL/
 
+patch $RPM_BUILD_ROOT%{_includedir}/CL/cl.hpp %{PATCH0}
+
+
 %files
 %dir %{_includedir}/CL
 %{_includedir}/CL/opencl.h