[ATfL] Add references to the standards support

arm-software/linux/docs/OpenMPSupport.md

@@ -0,0 +1,8 @@
+
+# Clang OpenMP support
+
+Refer to the [status page](https://clang.llvm.org/docs/OpenMPSupport.html) for details on Clang OpenMP support.
+
+# Flang OpenMP Support
+
+Refer to the [status page](https://flang.llvm.org/docs/OpenMPSupport.html) for details on Flang OpenMP support.

arm-software/linux/docs/StandardsSupport.md

@@ -0,0 +1,11 @@
+# C Standard Support
+
+Refer to the [Clang C status page](https://clang.llvm.org/c_status.html) for details on C standard support.
+
+# C++ Standard Support
+
+Refer to the [Clang C++ status page](https://clang.llvm.org/cxx_status.html) for details on C++ standard support.
+
+# Fortran Standards Support
+
+Refer to the [Flang Fortran Standards Support page](https://flang.llvm.org/docs/FortranStandardsSupport.html) for details on Fortran standards support.

arm-software/linux/docs/index.md

@@ -14,4 +14,6 @@ platforms.
    GettingStarted
    UsingArmPL
    PortingFromACfL
+   StandardsSupport
+   OpenMPSupport
 ```