The busy divider and busy mux is actually used by the system critical clocks,
so add 'CLK_IS_CRITICAL' to clocks registered with these two type.
Signed-off-by: NBai Ping <ping.bai@nxp.com>
Acked-by: NDong Aisheng <aisheng.dong@nxp.com>
Signed-off-by: NStephen Boyd <sboyd@kernel.org>