clk: sophgo: cv18xx-ip: convert from divider_round_rate() to divider_determine_rate()

clk: sophgo: cv18xx-ip: convert from divider_round_rate() to divider_determine_rate()

The divider_round_rate() function is now deprecated, so let's migrate
to divider_determine_rate() instead so that this deprecated API can be
removed. Also go ahead and convert all of the driver from round rate
type to determine rate that accepts a 'struct clk_rate_request' to
simplify the overall driver code.

Signed-off-by: Brian Masney <bmasney@redhat.com>