clk: imx8mn: Add necessary frequency support for ARM PLL table

i.MX8MN supports CPU running at 1.5GHz/1.4GHz/1.2GHz, add missing
frequency for ARM PLL table.
Signed-off-by: Anson Huang <Anson.Huang@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

drivers/clk/imx/clk-imx8mn.c

@@ -42,6 +42,8 @@ enum {
 static const struct imx_pll14xx_rate_table imx8mn_pll1416x_tbl[] = {
 	PLL_1416X_RATE(1800000000U, 225, 3, 0),
 	PLL_1416X_RATE(1600000000U, 200, 3, 0),
+	PLL_1416X_RATE(1500000000U, 375, 3, 1),
+	PLL_1416X_RATE(1400000000U, 350, 3, 1),
 	PLL_1416X_RATE(1200000000U, 300, 3, 1),
 	PLL_1416X_RATE(1000000000U, 250, 3, 1),
 	PLL_1416X_RATE(800000000U,  200, 3, 1),