[Buildroot] [PATCH] board/boundarydevices: remove u-boot from genimage.cfg

[Gary Bisson <gary.bisson@boundarydevices.com>]

Adding a comment to explain how to update the bootloader since it is
located in NOR flash memory.

Signed-off-by: Gary Bisson <gary.bisson@boundarydevices.com>
---
Hi,

Just realized that our genimage.cfg can be confusing since it copies
the u-boot binary although the BootROM will always boot from NOR.

Regards,
Gary
---
 board/boundarydevices/common/genimage.cfg | 14 ++++++++------
 1 file changed, 8 insertions(+), 6 deletions(-)

diff --git a/board/boundarydevices/common/genimage.cfg b/board/boundarydevices/common/genimage.cfg
index 7a5e71e..a383fb7 100644
--- a/board/boundarydevices/common/genimage.cfg
+++ b/board/boundarydevices/common/genimage.cfg
@@ -1,13 +1,15 @@
+# Minimal SD card image for Boundary Devices platforms
+#
+# It does not need a boot section for a bootloader since it is booted
+# from its NOR flash memory.
+#
+# To update the bootloader, execute the following from U-Boot prompt:
+# => run upgradeu
+
 image sdcard.img {
 	hdimage {
 	}
 
-	partition u-boot {
-		in-partition-table = "no"
-		image = "u-boot.imx"
-		offset = 1024
-	}
-
 	partition rootfs {
 		partition-type = 0x83
 		image = "rootfs.ext4"
-- 
2.9.3