docs: release: Add notes on Zephyr USB fixes and boot serial echo
Adds 3 notes, 2 for zephyr USB CDC ACM fixes and 1 for a boot
serial echo fix
Signed-off-by: Jamie McCrae <jamie.mccrae@nordicsemi.no>
diff --git a/docs/release-notes.d/boot-serial-echo.md b/docs/release-notes.d/boot-serial-echo.md
new file mode 100644
index 0000000..2667f73
--- /dev/null
+++ b/docs/release-notes.d/boot-serial-echo.md
@@ -0,0 +1 @@
+- Boot serial: Add response to echo command if support is not enabled, previously the command would have been accepted but no response indicating that the command is not supported would have been sent.