Add IPsec checks for IPSEC_TUNNEL feature

This patch adds checks to ensure that the IPSEC_TUNNEL feature flag is
enabled.

Bug: 117183273
Test: Compiles & tests passing
Change-Id: I2699dda29e1eed139bc6fd1b70071e5ab33cad88
1 file changed
tree: e8ce36cf2ed4032ba0cbe87ae1713399adc9957b
  1. core/
  2. services/
  3. tests/