powerpc: Use str_enabled_disabled() helper function
Remove hard-coded strings by using the str_enabled_disabled() helper
function.
Signed-off-by: Thorsten Blum <thorsten.blum@linux.dev>
Reviewed-by: Ritesh Harjani (IBM) <ritesh.list@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://patch.msgid.link/20241027222219.1173-2-thorsten.blum@linux.dev
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