build: core: include platform helper macros in target makefiles

* These are now needed sooner than we had been importing them
  in android_build. This ensures they'll be imported before
  their macros are needed.

* Modify for omni
  - drop MTK bits

Change-Id: I5ba29c32fff38d33728c2ba5cb9d05832369f39c
1 file changed
tree: 562558b8e24e257a1d8c45da4c60fc4a1056326b
  1. build/
  2. charger/
  3. config/
  4. overlay/
  5. prebuilt/
  6. sepolicy/
  7. utils/
  8. Android.mk