Update config files
    
     - Add core options from SLE15 which are not enabled on master for no
       obvious reason
     - Add core option from x86 which are not enabled on non-x86 for no
       obvious reason
     - Enable fadump
    
    Changes:
      Scheduling:
         +CONFIG_CONTEXT_TRACKING=y
         -CONFIG_TICK_CPU_ACCOUNTING=y
         +CONFIG_VIRT_CPU_ACCOUNTING_GEN=y
         +CONFIG_VIRT_CPU_ACCOUNTING=y
         +CONFIG_IRQ_TIME_ACCOUNTING=y
    
         +CONFIG_TASKS_RCU=y
    
         +CONFIG_RT_GROUP_SCHED=y
    
       mm:
         +# CONFIG_TRANSPARENT_HUGEPAGE_ALWAYS is not set
         +CONFIG_TRANSPARENT_HUGEPAGE_MADVISE=y
    
         +CONFIG_FRONTSWAP=y
         +CONFIG_ZSWAP=y
    
       arc/ppc:
         +CONFIG_FA_DUMP=y
    
       fs:
         +CONFIG_9P_FSCACHE=y
    
       net:
         +CONFIG_TIPC=m
         +CONFIG_TIPC_DIAG=m
         +CONFIG_TIPC_MEDIA_UDP=y
    
       misc:
         -CONFIG_SERIAL_SIFIVE=m
    
         +CONFIG_SYSCTL_SYSCALL=y
    
       debug&test:
         +CONFIG_PAGE_EXTENSION=y
         +CONFIG_PAGE_OWNER=y
         +CONFIG_DEBUG_MISC=y
         +CONFIG_RCU_TRACE=y
         +CONFIG_KGDB_SERIAL_CONSOLE=y
         +CONFIG_SCOM_DEBUGFS=y
    
         +CONFIG_CRYPTO_TEST=m
         +CONFIG_RCU_TORTURE_TEST=m
         +CONFIG_TEST_FIRMWARE=m
         +CONFIG_TEST_LIVEPATCH=m
         +CONFIG_TEST_LKM=m
         +CONFIG_TEST_SYSCTL=m
         +CONFIG_TORTURE_TEST=m