board: stm32: fix extra env setings addresses

For stm32f4, f7 and h7 boards, reserve:
 - 4MB for kernel
 - 64KB for fdt, boot script, pxefile
 - the remaining memory for ramdisk

Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
Reviewed-by: Patrick DELAUNAY <patrick.delaunay@st.com>
diff --git a/include/configs/stm32f469-discovery.h b/include/configs/stm32f469-discovery.h
index 463f1c4..23ed02a 100644
--- a/include/configs/stm32f469-discovery.h
+++ b/include/configs/stm32f469-discovery.h
@@ -40,12 +40,12 @@
 #define CONFIG_EXTRA_ENV_SETTINGS				\
 			"kernel_addr_r=0x00008000\0"		\
 			"fdtfile=stm32f469-disco.dtb\0"	\
-			"fdt_addr_r=0x00700000\0"		\
-			"scriptaddr=0x00800000\0"		\
-			"pxefile_addr_r=0x00800000\0" \
+			"fdt_addr_r=0x00408000\0"		\
+			"scriptaddr=0x00418000\0"		\
+			"pxefile_addr_r=0x00428000\0" \
+			"ramdisk_addr_r=0x00438000\0"		\
 			"fdt_high=0xffffffffffffffff\0"		\
 			"initrd_high=0xffffffffffffffff\0"	\
-			"ramdisk_addr_r=0x00900000\0"		\
 			BOOTENV
 
 /*