Use unmodified MAKECMDGOALS in ninja.mk.

The build system removes targets like "PRODUCT-full-eng" from
MAKECMDGOALS in build/core/product_config.mk.
Without this change, such target isn't passed to kati.

Change-Id: I0b3949ed1f5557445d7f5d5bd59b7875c0b2ea7f
4 files changed