clk: clocking-wizard: Fix the round rate handling for versal

clk: clocking-wizard: Fix the round rate handling for versal

Fix the `clk_round_rate` implementation for Versal platforms by calling
the Versal-specific divider calculation helper. The existing code used
the generic divider routine, which results in incorrect round rate.

Fixes: 7681f64e6404 ("clk: clocking-wizard: calculate dividers fractional parts")
Signed-off-by: Shubhrajyoti Datta <shubhrajyoti.datta@amd.com>
Link: https://lore.kernel.org/r/20250625054114.28273-1-shubhrajyoti.datta@amd.com
Signed-off-by: Stephen Boyd <sboyd@kernel.org>