imx8mq: reform2: drop redundant gd clearing in board_init_f

The global data (gd) area is already zeroed in
board_init_f_init_reserve() before board_init_f() is called.
Remove the duplicate gd clearing from board_init_f().

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

board/mntre/imx8mq_reform2/spl.c

@@ -10,7 +10,6 @@
 #include <image.h>
 #include <init.h>
 #include <log.h>
-#include <asm/global_data.h>
 #include <asm/io.h>
 #include <errno.h>
 #include <asm/io.h>
@@ -28,8 +27,6 @@
 #include <power/pmic.h>
 #include <spl.h>
 
-DECLARE_GLOBAL_DATA_PTR;
-
 extern struct dram_timing_info dram_timing_ch2;
 
 static void spl_dram_init(void)
@@ -226,9 +223,6 @@ void board_init_f(ulong dummy)
 {
 	int ret;
 
-	/* Clear global data */
-	memset((void *)gd, 0, sizeof(gd_t));
-
 	arch_cpu_init();
 
 	init_uart_clk(0);