add keyutils as a weak dependency for POWER
    
    Resolves: bz2024450
    Upstream: Fedora
    Conflict: RHEL9 POWER kexec-tools doesn't have any dependency on other
              packages.
    
    commit c3c8df3745a711992f1aa952e24eef0790924400
    Author: Coiby Xu <coxu@redhat.com>
    Date:   Thu Nov 18 12:26:01 2021 +0800
    
        add keytuils as a weak dependency for POWER
    
        When secureboot is enabled, kdumpctl needs to use keyctl to add/remove
        a key to/from the .ima keyring.
    
        Fixes: commit 596fa0a07f089a9dd54cf631124d88653b4d77ec
               ("kdumpctl: enable secure boot on ppc64le LPARs")
    
        Signed-off-by: Coiby Xu <coxu@redhat.com>
        Acked-by: Hari Bathini <hbathini@linux.ibm.com>
    
    Signed-off-by: Coiby Xu <coxu@redhat.com>