Revert "kernel: cgroup: protecting css_set object"

This reverts commit 948d4b97f90aeb7538ef15b8b7e7fa1769db0d6e.
Revert "qup_i2c: Initialize I2C resource before registering."

This reverts commit b5c771e5eaf22fc6edac41dc3a3b94773f81b68e.