device: add android.hardware.hardware_keystore feature
Add android.hardware.hardware_keystore feature and set its value to 3
This feature is used to check Keymaster/Keymint version and it should be equal to the version reported by Keymaster or Keymint
The optee based keymaster 3.0 returns a value of 3. Thus, set the value to 3.
Signed-off-by: Safae Ouajih souajih@baylibre.com