[xen master] docs/misra: add rule 11.9

[patchbot@xxxxxxx]

commit 0b5bca91aa490ec6d57045550b3dc1bc22babf6e
Author:     Stefano Stabellini <stefano.stabellini@xxxxxxx>
AuthorDate: Tue Sep 26 18:05:38 2023 -0700
Commit:     Stefano Stabellini <stefano.stabellini@xxxxxxx>
CommitDate: Fri Sep 29 11:00:47 2023 -0700

    docs/misra: add rule 11.9
    
    Following up from the MISRA C group discussion, add Rule 11.9 to
    docs/misra/rules.rst.
    
    Signed-off-by: Stefano Stabellini <stefano.stabellini@xxxxxxx>
    Acked-by: Jan Beulich <jbeulich@xxxxxxxx>
    Acked-by: Bertrand Marquis <bertrand.marquis@xxxxxxx>
    Release-acked-by: Henry Wang <Henry.Wang@xxxxxxx>
---
 docs/misra/rules.rst | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/docs/misra/rules.rst b/docs/misra/rules.rst
index 67c9195ed8..661aa95e23 100644
--- a/docs/misra/rules.rst
+++ b/docs/misra/rules.rst
@@ -374,6 +374,11 @@ maintainers if you want to suggest a change.
      - A cast shall not remove any const or volatile qualification from the 
type pointed to by a pointer
      -
 
+   * - `Rule 11.9 
<https://gitlab.com/MISRA/MISRA-C/MISRA-C-2012/Example-Suite/-/blob/master/R_11_09.c>`_
+     - Required
+     - The macro NULL shall be the only permitted form of null pointer constant
+     -
+
    * - `Rule 12.5 
<https://gitlab.com/MISRA/MISRA-C/MISRA-C-2012/Example-Suite/-/blob/master/R_12_05.c>`_
      - Mandatory
      - The sizeof operator shall not have an operand which is a function
--
generated by git-patchbot for /home/xen/git/xen.git#master