Revert "Remove gBn/sConstructorMap from headers."

This reverts commit 0288c9a89f9c06414a3ccee926bb075dd303e52a.

Reason for revert: crashing when device have old prebuilts
that doesn't even have the static map within
getBn/sConstructorMap

Bug: 69122224
Bug: 73486242
Test: boots
Change-Id: Ic7bac4f54eca5d96e9564f22a78ac0e3de9c864f
Merged-In: Ic7bac4f54eca5d96e9564f22a78ac0e3de9c864f
4 files changed