Add system propery ro.build.flavor.

ro.build.flavor is set to "$(TARGET_PRODUCT)-$(TARGET_BUILD_VARIANT)" in
system.img build.prop at build time,
and it won't be overridden by oem partition's build.prop.

Bug: 18605832
Change-Id: Ic917623dd43b74d9c601119db0b457483e8c4472
2 files changed