configs: stm32f746-disco: Fix ramdisk_addr_r

Set ramdisk_addr_r to 0xC0600000.

Reported-by: Christophe Priouzeau <christophe.priouzeau@st.com>
Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
Acked-by: Patrick Delaunay <patrick.delaunay@st.com>
diff --git a/include/configs/stm32f746-disco.h b/include/configs/stm32f746-disco.h
index a24127d..cc26f83 100644
--- a/include/configs/stm32f746-disco.h
+++ b/include/configs/stm32f746-disco.h
@@ -55,7 +55,7 @@
 			"pxefile_addr_r=0xC0008000\0" \
 			"fdt_high=0xffffffffffffffff\0"		\
 			"initrd_high=0xffffffffffffffff\0"	\
-			"ramdisk_addr_r=0xD0900000\0"		\
+			"ramdisk_addr_r=0xC0600000\0"		\
 			BOOTENV
 
 /*