imx93_evk: defconfig: enable clock driver

Add clocks nodes in u-boot.dtsi file.
Remove init_uart_clk() call.

Signed-off-by: Sébastien Szymanski <sebastien.szymanski@armadeus.com>
diff --git a/configs/imx93_11x11_evk_defconfig b/configs/imx93_11x11_evk_defconfig
index 3b5c7bd..7c8fd0c 100644
--- a/configs/imx93_11x11_evk_defconfig
+++ b/configs/imx93_11x11_evk_defconfig
@@ -82,6 +82,8 @@
 CONFIG_REGMAP=y
 CONFIG_SYSCON=y
 CONFIG_ADC_IMX93=y
+CONFIG_SPL_CLK_IMX93=y
+CONFIG_CLK_IMX93=y
 CONFIG_CPU=y
 CONFIG_CPU_IMX=y
 CONFIG_IMX_RGPIO2P=y