We don't need to use IDLE_STATE_ENTER_SEQ_NORET on Power9.
Reviewed-by: NGautham R. Shenoy <ego@linux.vnet.ibm.com>
Signed-off-by: NNicholas Piggin <npiggin@gmail.com>
[mpe: Split out of larger patch]
Signed-off-by: NMichael Ellerman <mpe@ellerman.id.au>