Fix build on s390x

Resolves: RHEL-63513

s390x-build.patch

@@ -0,0 +1,13 @@
+diff --git a/Source/ThirdParty/ANGLE/src/common/mathutil.h b/Source/ThirdParty/ANGLE/src/common/mathutil.h
+index 8f4579dc5611..4d981d4427bc 100644
+--- a/Source/ThirdParty/ANGLE/src/common/mathutil.h
++++ b/Source/ThirdParty/ANGLE/src/common/mathutil.h
+@@ -550,7 +550,7 @@ inline R roundToNearest(T input)
+ {
+     static_assert(std::is_floating_point<T>::value);
+     static_assert(std::numeric_limits<R>::is_integer);
+-#if defined(__aarch64__) || defined(_M_ARM64)
++#if defined(__aarch64__) || defined(_M_ARM64) || defined(__s390x__)
+     // On armv8, this expression is compiled to a dedicated round-to-nearest instruction
+     return static_cast<R>(std::round(input));
+ #else

webkit2gtk3.spec

@@ -27,6 +27,7 @@ Source2:        webkitgtk-keys.gpg
 ##
 
 Patch100:       compiler-flags.patch
+Patch101:       s390x-build.patch
 
 ##
 ## Patches to support older or missing build dependencies