Convert doclava to Soong for Droiddoc

Test:  convert libcore docs Android.mk to Soong.
Bug: b/70351683
Change-Id: Ib203b34ec2f8f32050148dec7f5f16bd23027948
ehange-Id: I4dc9d0fb5515da2922708302b8117b6e868af084
2 files changed