fix path stuff and kconfig references

.gitignore

@@ -16,7 +16,7 @@ __pycache__/
 /doc/_build*
 
 # stuff managed by west
-bootloader
-modules
-tools
-zephyr
+./bootloader
+./modules
+./tools
+./zephyr

README.md

@@ -43,8 +43,8 @@ nrfutil install device
 ```bash
 west build -p auto -b nrf52dk/nrf52832 firmware/blinky
 west build -p auto -b nrf52dk/nrf52832 firmware/app
-west build -p auto -b mellifera_rev1 firmware/blinky -- -DBOARD_ROOT=$(pwd)/firmware
-west build -p auto -b mellifera_rev1 firmware/app -- -DBOARD_ROOT=$(pwd)/firmware
+west build -p auto -b mellifera_rev1 firmware/blinky
+west build -p auto -b mellifera_rev1 firmware/app
 
 west flash
 ```

firmware/zephyr/module.yml

@@ -0,0 +1,17 @@
+build:
+  # Path to the Kconfig file that will be sourced into Zephyr Kconfig tree under
+  # Zephyr > Modules > example-application. Path is relative from root of this
+  # repository.
+  kconfig: Kconfig
+  # Path to the folder that contains the CMakeLists.txt file to be included by
+  # Zephyr build system. The `.` is the root of this repository.
+  cmake: .
+  settings:
+    # Additional roots for boards and DTS files. Zephyr will use the
+    # `<board_root>/boards` for additional boards. The `.` is the root of this
+    # repository.
+    board_root: .
+    # Zephyr will use the `<dts_root>/dts` for additional dts files and
+    # `<dts_root>/dts/bindings` for additional dts binding files. The `.` is
+    # the root of this repository.
+    dts_root: .