Let vendor_init adjusted the cpusets by device config from the
server. Allow us to study the performance and power impacts
by various experiment settings.
Bug: 223685902
Test: adb remount ; adb push init.gs101.rc /vendor/etc/hw/ ; adb reboot
Test: change persist.device_config.vendor_system_native.<group>_cpuset and check /dev/cpuset/<group>/cpus is also modified
Change-Id: I73369f2cef7b999cb380278503a4dbfcc4cff3cd