armv8: fsl-layerscape: introduce fsl_board_late_init()

The fsl-layerscape already occupies board_late_init(), therefore it is
not possible for a board to have its own board_late_init(). Introduce
fsl_board_late_init() which can be implemented in the board specific
code.

Signed-off-by: Michael Walle <michael@walle.cc>
Reviewed-by: Priyanka Jain <priyanka.jain@nxp.com>

arch/arm/cpu/armv8/fsl-layerscape/soc.c

@@ -829,6 +829,11 @@ int fsl_setenv_mcinitcmd(void)
 #endif
 
 #ifdef CONFIG_BOARD_LATE_INIT
+__weak int fsl_board_late_init(void)
+{
+	return 0;
+}
+
 int board_late_init(void)
 {
 #ifdef CONFIG_CHAIN_OF_TRUST
@@ -863,6 +868,6 @@ int board_late_init(void)
 	qspi_ahb_init();
 #endif
 
-	return 0;
+	return fsl_board_late_init();
 }
 #endif