zephyr-blueprint-smarthome-led: rename -led to -switch

The -led suffix is inconsistent with every other naming in the
project (i.e. env variable with MAC address, device class in
Home Assistant), so change it to -switch.

Signed-off-by: Wojciech Zmuda <wojciech.zmuda@huawei.com>

meta-ohos-blueprints/recipes-kernel/zephyr-kernel/zephyr-blueprint-smarthome-led.bb → meta-ohos-blueprints/recipes-kernel/zephyr-kernel/zephyr-blueprint-smarthome-switch.bb

@@ -4,8 +4,8 @@
 
 require zephyr-blueprint-smarthome-base.bb
 
-SUMMARY = "SmartHome blueprint image: smart LED"
-DESCRIPTION = "Zephyr based image targeting smart LED board"
+SUMMARY = "SmartHome blueprint image: smart LED switch"
+DESCRIPTION = "Zephyr based image targeting smart LED switch board"
 LICENSE = "Apache-2.0"
 
 MAC = "${SMART_HOME_SWITCH_MAC}"