[Invisalign2] move btm_ble_sec apis signatures to btm_ble_sec.h am: 251409be...

[Invisalign2] move btm_ble_sec apis signatures to btm_ble_sec.h am: 251409be am: 03194142 am: c5dde96c

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Bluetooth/+/2853883



Change-Id: I898018b9e7fd7cc0c00aacc730c266822c2e1f6c
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>