logos: Add the TechNexion's logo

Add the TechNexion's logo from their internal U-Boot tree.

Signed-off-by: Fabio Estevam <festevam@gmail.com>
Signed-off-by: Otavio Salvador <otavio@ossystems.com.br>
diff --git a/tools/logos/technexion.bmp b/tools/logos/technexion.bmp
new file mode 100644
index 0000000..bccde2d
--- /dev/null
+++ b/tools/logos/technexion.bmp
Binary files differ