Make android-toold-adbd.service consistent between selinux-enabled and -disabled configurations

ConditionPathExists is set to /etc/usb-debugging-enabled as part of meta-oe/recipes-devtools/android-tools/android-tools/android-tools-adbd.service file. However, in meta-oe/dynamic-layers/selinux/recipes-devtool/android-tools/android-tools/android-tools-adbd.service file ConditionPathExists is set to /var/usb-debugging-enabled

This causes an internal inconsistency between selinux-enabled and -disabled configurations.

Hence, change ConditionPathExists=/var/usb-debugging-enabled to ConditionPathExists=/etc/usb-debugging-enabled

Reported-by: @lumag

Author: raghuvarya-sudheendra

meta-oe/dynamic-layers/selinux/recipes-devtool/android-tools/android-tools/android-tools-adbd.service

@@ -1,6 +1,6 @@
 [Unit]
 Description=Android Debug Bridge
-ConditionPathExists=/var/usb-debugging-enabled
+ConditionPathExists=/etc/usb-debugging-enabled
 Before=android-system.service
 
 [Service]