sandbox: implement ft_board_setup()

Currently we are not able to test reservations created by ft_board_setup().

Implement ft_board_setup() to create an arbitrary reservation and enable
OF_BOARD_SETUP.
Signed-off-by: NHeinrich Schuchardt <xypron.glpk@gmx.de>
Reviewed-by: NSimon Glass <sjg@chromum.org>

arch/Kconfig

@@ -96,6 +96,7 @@ config SANDBOX
 	select DM_SPI_FLASH
 	select HAVE_BLOCK_DEVICE
 	select LZO
+	select OF_BOARD_SETUP
 	select PCI_ENDPOINT
 	select SPI
 	select SUPPORT_OF_CONTROL

board/sandbox/sandbox.c

@@ -58,6 +58,12 @@ int board_init(void)
 	return 0;
 }
 
+int ft_board_setup(void *fdt, bd_t *bd)
+{
+	/* Create an arbitrary reservation to allow testing OF_BOARD_SETUP.*/
+	return fdt_add_mem_rsv(fdt, 0x00d02000, 0x4000);
+}
+
 #ifdef CONFIG_BOARD_LATE_INIT
 int board_late_init(void)
 {