Make doc package arched

opencv.spec

@@ -204,7 +204,8 @@ package.
 %package        doc
 Summary:        Documentation files
 Requires:       opencv-devel = %{version}-%{release}
-BuildArch:      noarch
+# Doc dependes on architecture, specifically whether the va_intel sample is installed depends on HAVE_VA
+# BuildArch:      noarch
 Provides:       %{name}-devel-docs = %{version}-%{release}
 Obsoletes:      %{name}-devel-docs < %{version}-%{release}