drivers: clk: clk-stm32mp13: round up VCO to the nearest frequency

Round up the vco clock to avoid unexpected clock rate:
- 999,999,023 Hz instead 1,000,000,000 Hz
- 417,755,859 Hz instead 417,800,000 Hz

Signed-off-by: Etienne Carriere <etienne.carriere@foss.st.com>
Signed-off-by: Gabriel Fernandez <gabriel.fernandez@foss.st.com>

core/drivers/clk/clk-stm32mp13.c

@@ -1744,7 +1744,7 @@ static unsigned long clk_stm32_pll_get_rate(struct clk *clk,
 		fvco = (unsigned long)(prate * (divn + 1U) / (divm + 1U));
 	}
 
-	return fvco;
+	return UDIV_ROUND_NEAREST(fvco, 100000) * 100000;
 };
 
 static bool clk_stm32_pll_is_enabled(struct clk *clk)