Fix compilation errors with kvstore - TDB_INTERNAL option to store BLE bonding info

[16L-YT]

Summary of changes

This fixes 3 errors:

1. "kvstore_global_api.h: No such file or directory" compilation error when ble-security-database-kvstore is true.
2. Missing as_entry definition in the header KVStoreSecurityDb.h.
3. Type conversion error in one of the tracing messages in KVStoreSecurityDb.cpp (adapted from Fix missing as_entry method in KVStoreSecurityDb #14684 to keep the 2 PRs compatible).

Refere to #14660 .

Impact of changes

Migration actions required

Documentation

---

Pull request type

[X] Patch update (Bug fix / Target update / Docs update / Test update / Refactor)
[] Feature update (New feature / Functionality change / New API)
[] Major update (Breaking change E.g. Return code change / API behaviour change)

---

Test results

[] No Tests required for this change (E.g docs only update)
[X] Covered by existing mbed-os tests (Greentea or Unittest)
[] Tests / results supplied as part of this PR

---

Reviewers

---

[ciarmcom]

@16L-YT, thank you for your changes.
@ARMmbed/mbed-os-maintainers please review.

[mergify]

This PR cannot be merged due to conflicts. Please rebase to resolve them.

[ciarmcom]

This pull request has automatically been marked as stale because it has had no recent activity. @16L-YT, please carry out any necessary work to get the changes merged. Thank you for your contributions.

[16L-YT]

@0xc0170 @noonfom
What should I do next step, why it is stalled ?

[0xc0170]

Thanks @16L-YT for the reminder, I'll review shortly and remove stale label.

[0xc0170]

Let's wait for @ARMmbed/mbed-os-connectivity team to review.

From what I see, files in generic require these libraries unconditionally.

[noonfom]

I can't officially approve this so please accept this comment as my approval 😉

[0xc0170]

CI started

[mbed-ci]

Jenkins CI Test : ✔️ SUCCESS

Build Number: 1 | 🔒 Jenkins CI Job | 🌐 Logs & Artifacts

CLICK for Detailed Summary

jobs	Status
jenkins-ci/mbed-os-ci_unittests	✔️
jenkins-ci/mbed-os-ci_build-cloud-example-ARM	✔️
jenkins-ci/mbed-os-ci_cmake-cloud-example-GCC_ARM	✔️
jenkins-ci/mbed-os-ci_cmake-cloud-example-ARM	✔️
jenkins-ci/mbed-os-ci_build-cloud-example-GCC_ARM	✔️
jenkins-ci/mbed-os-ci_cmake-example-ARM	✔️
jenkins-ci/mbed-os-ci_build-greentea-ARM	✔️
jenkins-ci/mbed-os-ci_build-example-ARM	✔️
jenkins-ci/mbed-os-ci_build-greentea-GCC_ARM	✔️
jenkins-ci/mbed-os-ci_build-example-GCC_ARM	✔️
jenkins-ci/mbed-os-ci_cmake-example-GCC_ARM	✔️
jenkins-ci/mbed-os-ci_greentea-test	✔️