configs: stm32f746-disco: use CONFIG_DEFAULT_DEVICE_TREE as fdtfile

As stm32f46-disco, stm32f769-disco and stm32746g-eval are very similar
except their respective device tree file. These 3 boards uses the same
TARGET_STM32F746_DISCO flag (so same include/configs/stm32f746-disco.h
and same board file board/st/stm32f746-disco/stm32f746-disco.c)

To be able to compile these 3 boards, replace the hard-coded device-tree
name in include/configs/stm32f746-disco.h by CONFIG_DEFAULT_DEVICE_TREE
which is set in each board defconfig file with the correct value.

Signed-off-by: Patrice Chotard <patrice.chotard@foss.st.com>
Reviewed-by: Patrick Delaunay <patrick.delaunay@foss.st.com>

diff --git a/include/configs/stm32f746-disco.h b/include/configs/stm32f746-disco.h
index b93acdcc1ff332ef2e4d725d454a012a1e663731..cc3d4b4449deb488c31f9412d0fc06cdc4adcb9d 100644 (file)
--- a/include/configs/stm32f746-disco.h
+++ b/include/configs/stm32f746-disco.h
@@ -34,7 +34,7 @@
 #include <config_distro_bootcmd.h>
 #define CONFIG_EXTRA_ENV_SETTINGS                              \
                        "kernel_addr_r=0xC0008000\0"            \
-                       "fdtfile=stm32f746-disco.dtb\0" \
+                       "fdtfile="CONFIG_DEFAULT_DEVICE_TREE".dtb\0"    \
                        "fdt_addr_r=0xC0408000\0"               \
                        "scriptaddr=0xC0418000\0"               \
                        "pxefile_addr_r=0xC0428000\0" \