Trying to add libcap-ng package into 19.07

I try to update packages/libs/libcap-ng in my 19.07 (Qualcomm SDK) but package still not updated.

  1. Copy 22.03/packages/libcap-ng package to my package repo.
  2. ./scripts/feeds update -a
  3. ./scripts/feeds install -a
    My feeds/packages.index dont update it and i am not able to see it in menuconfig since its not index.
    Kindly help.

19.07 and a vendor SDK, you're still on your own.