clk: ti: Use clock-output-names for clkctrl

Use clock-output-names devicetree property for clkctrl clocks if
available.

Signed-off-by: Tony Lindgren <tony@atomide.com>
Link: https://lore.kernel.org/r/20220204071449.16762-6-tony@atomide.com


Signed-off-by: Stephen Boyd <sboyd@kernel.org>