powerpc/board/t1024rdb: enable board-level reset when issuing reset command

As board-specific reset logic, it needs to issue reset signal
via CPLD when issuing 'reset' command in u-boot, this patch
solves the issue of reset command not working on T1024RDB.

Signed-off-by: Shengzhou Liu <Shengzhou.Liu@nxp.com>
Reviewed-by: York Sun <york.sun@nxp.com>

board/freescale/t102xrdb/t102xrdb.c

@@ -167,6 +167,13 @@ unsigned long get_board_ddr_clk(void)
 	return CONFIG_DDR_CLK_FREQ;
 }
 
+#ifdef CONFIG_TARGET_T1024RDB
+void board_reset(void)
+{
+	CPLD_WRITE(reset_ctl1, CPLD_LBMAP_RESET);
+}
+#endif
+
 int misc_init_r(void)
 {
 	return 0;