rootdir: clean-up usb config
wifi: re-add wpa_supplicant.conf

It got removed in one of the previous commits
egl: enable BOARD_EGL_WORKAROUND_BUG_10194508

our gpu blobs don't support EGL_KHR_gl_colorspace
overlay: enable translucent decor on lockscreen

navigation bar and/or status bar

(this got removed in one of the previous commits)