gck: refactor to grep flags only through Kconfig files
gck: refactor to grep flags only through Kconfig files

Change-Id: Id359f2edcf306feff2d27a74d029d4bf26f0b01b
Signed-off-by: Adrian DC <01fb3892f39957945220431e7409156544d2f041@gmail.com>

AdrianDC/android_development_shell_tools,AdrianDC/android_development_shell_tools