nxp: imx94_evk: Drop init_uart_clk

Rely on serial driver calling clk_enable to enable the lpuart clk, no
need to do init_uart_clk in board_early_init_f().

Also remove board_early_init_f(), because it is empty now.

Signed-off-by: Peng Fan <peng.fan@nxp.com>

board/nxp/imx94_evk/imx94_evk.c

@@ -9,12 +9,6 @@
 #include <asm/arch/clock.h>
 #include <asm/mach-imx/sys_proto.h>
 
-int board_early_init_f(void)
-{
-	init_uart_clk(0);
-	return 0;
-}
-
 int board_init(void)
 {
 	return 0;

board/nxp/imx94_evk/spl.c

@@ -69,8 +69,6 @@ void board_init_f(ulong dummy)
 
 	arch_cpu_init();
 
-	board_early_init_f();
-
 	preloader_console_init();
 
 	debug("SOC: 0x%x\n", gd->arch.soc_rev);

configs/imx943_evk_defconfig

@@ -37,7 +37,6 @@ CONFIG_BOOTCOMMAND="bootflow scan -l; run bsp_bootcmd"
 CONFIG_DEFAULT_FDT_FILE="imx943-evk.dtb"
 CONFIG_SYS_CBSIZE=2048
 CONFIG_SYS_PBSIZE=2074
-CONFIG_BOARD_EARLY_INIT_F=y
 CONFIG_BOARD_LATE_INIT=y
 CONFIG_PCI_INIT_R=y
 CONFIG_SPL_MAX_SIZE=0x30000