clk: imx8mn: Keep uart clocks on for early console

Call imx_register_uart_clocks() API to keep uart clocks enabled
when earlyprintk or earlycon is active.
Signed-off-by: Anson Huang <Anson.Huang@nxp.com>
Reviewed-by: Abel Vesa <abel.vesa@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

drivers/clk/imx/clk-imx8mn.c

@@ -355,6 +355,14 @@ static const char * const imx8mn_clko2_sels[] = {"osc_24m", "sys_pll2_200m", "sy
 static struct clk *clks[IMX8MN_CLK_END];
 static struct clk_onecell_data clk_data;
 
+static struct clk ** const uart_clks[] = {
+	&clks[IMX8MN_CLK_UART1_ROOT],
+	&clks[IMX8MN_CLK_UART2_ROOT],
+	&clks[IMX8MN_CLK_UART3_ROOT],
+	&clks[IMX8MN_CLK_UART4_ROOT],
+	NULL
+};
+
 static int imx8mn_clocks_probe(struct platform_device *pdev)
 {
 	struct device *dev = &pdev->dev;
@@ -612,6 +620,8 @@ static int imx8mn_clocks_probe(struct platform_device *pdev)
 		goto unregister_clks;
 	}
 
+	imx_register_uart_clocks(uart_clks);
+
 	return 0;
 
 unregister_clks: