Convert incident_report and incident-section-gen to Android.bp

See build/soong/README.md for more information.

Test: m incident_report incident-section-gen
Test: mmma frameworks/base
Change-Id: If1a930b40196139d29e63f6558bc4a75faca1967
Merged-In: If1a930b40196139d29e63f6558bc4a75faca1967