flavours/linux/bblayers.conf.sample: Add support for dashboard demo

Signed-off-by: Andrei Gherzan <andrei.gherzan@huawei.com>

flavours/linux/bblayers.conf.sample

@@ -13,13 +13,16 @@ BBLAYERS ?= " \
   ##OEROOT##/../meta-zephyr \
   ##OEROOT##/../meta-ohos/meta-ohos-core \
   ##OEROOT##/../meta-ohos/meta-ohos-acts \
+  ##OEROOT##/../meta-ohos/meta-ohos-demo \
   ##OEROOT##/../meta-intel \
   ##OEROOT##/../meta-seco-intel \
   ##OEROOT##/../meta-freescale \
   ##OEROOT##/../meta-seco-imx \
   ##OEROOT##/../meta-openembedded/meta-oe \
   ##OEROOT##/../meta-openembedded/meta-python \
+  ##OEROOT##/../meta-python-dunfellplus \
   ##OEROOT##/../meta-st-stm32mp \
   ##OEROOT##/../meta-st-stm32mp-addons \
   ##OEROOT##/../meta-av96/meta-av96-core \
+  ##OEROOT##/../meta-homeassistant \
   "