l2cap: Store remote FCS Configuration options

Make sure to remember remote configuration.

Bug: 371948052
Bug: 372605959
Test: mmm packages/modules/Bluetooth
Test: manual PTS tests L2CAP/FOC/BV-05-C
Flag: com.android.bluetooth.flags.l2cap_fcs_option_fix
Change-Id: I173ecff48efc74c424d9f671c89646a569413f2f