Fix FTBFS on ARM: linux-pri patch: Set use_system_yasm only on x86_64 and i386

qt5-qtwebengine.spec

@@ -302,7 +302,7 @@ popd
 
 %changelog
 * Sat Jan 09 2016 Kevin Kofler <Kevin@tigcc.ticalc.org> - 5.6.0-0.5.beta
-- Bump Release for official Rawhide build (to distinguish it from Copr builds)
+- Fix FTBFS on ARM: linux-pri patch: Set use_system_yasm only on x86_64 and i386
 
 * Sat Jan 09 2016 Kevin Kofler <Kevin@tigcc.ticalc.org> - 5.6.0-0.4.beta.1
 - Use more specific BuildRequires for docs (thanks to rdieter)

qtwebengine-opensource-src-5.6.0-beta-linux-pri.patch

@@ -1,17 +1,22 @@
 diff -ur qtwebengine-opensource-src-5.6.0-beta/src/core/config/linux.pri qtwebengine-opensource-src-5.6.0-beta-linux-pri/src/core/config/linux.pri
 --- qtwebengine-opensource-src-5.6.0-beta/src/core/config/linux.pri	2015-12-14 16:27:24.000000000 +0100
 +++ qtwebengine-opensource-src-5.6.0-beta-linux-pri/src/core/config/linux.pri	2016-01-06 04:43:23.115923478 +0100
-@@ -43,3 +43,20 @@
+@@ -43,3 +43,25 @@
  use?(system_icu):      GYP_CONFIG += use_system_icu=1
  use?(system_ffmpeg):   GYP_CONFIG += use_system_ffmpeg=1
  
 +# some more system packages, that are not checked for for some reason
 +GYP_CONFIG += \
-+    use_system_yasm=1 \
 +    use_system_expat=1 \
 +    use_system_re2=1 \
 +    use_system_protobuf=1
 +
++# yasm is only used on x86, and passing use_system_yasm makes the build fail on
++# other architectures (e.g., ARM), so make it conditional on the architecture
++contains(QT_ARCH, "x86_64")|contains(QT_ARCH, "i386") {
++    GYP_CONFIG += use_system_yasm=1
++}
++
 +# link libpci instead of dlopening it, our Qt packaging depends on it anyway
 +GYP_CONFIG += linux_link_libpci=1
 +