[Buildroot] [PATCH] board/boundarydevices: update readme.txt for nitrogen8mp

[Gary Bisson]

Add mention about nitrogen8mp_defconfig which is meant for our
Nitrogen8MPlus SOM device.

Signed-off-by: Gary Bisson <gary.bisson at boundarydevices.com>
---
 board/boundarydevices/common/readme.txt | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/board/boundarydevices/common/readme.txt b/board/boundarydevices/common/readme.txt
index 307cfb5549..d3169b08f5 100644
--- a/board/boundarydevices/common/readme.txt
+++ b/board/boundarydevices/common/readme.txt
@@ -31,6 +31,9 @@ Here is the list of targeted platforms per defconfig:
   - Nitrogen8MNano
   - Nitrogen8MNano_SOM
 
+- nitrogen8mp_defconfig
+  - Nitrogen8MPlus_SOM
+
 To install, simply copy the image to your storage (SD, eMMC, USB):
 
 $ sudo dd if=output/images/sdcard.img of=/dev/sdX
-- 
2.30.2