zephyr-openthread-rcp: refuse to build with ACM0 console enabled

The OpenThread border router on linux uses the USB console on the
antenna running zephyr. The ACM0 patch gets in the way and disables the
OpenThread interface. Error out if the user tries to have this option
enabled and build the antenna firmware.

Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@huawei.com>

meta-zephyr-core/recipes-kernel/zephyr-kernel/zephyr-openthread-rcp.bb

@@ -8,3 +8,9 @@ EXTRA_OECMAKE += "-DCONF_FILE="prj.conf overlay-rcp.conf overlay-usb-nrf-br.conf
 # towards the boards (e.g. flash layout and ieee802154 radio) so we need to
 # limit to known working machines here.
 COMPATIBLE_MACHINE = "(arduino-nano-33-ble)"
+
+python __anonymous() {
+    has_acm0 = d.getVar("ONIRO_ENABLE_ACM0")
+    if has_acm0 and has_acm0 != "0":
+        raise bb.parse.SkipRecipe("OpenThread coprocessor cannot work with the ACM0 console enabled")
+}