tree c522daf913dcb5c1a91374a956b0d59b0a51882c
parent 5f8394ca88e33bb0a0af374ad5412650a6e222e6
author oshmoun <oshmoun100@googlemail.com> 1543055161 +0100
committer Dees Troy <dees_troy@teamw.in> 1552879655 +0100

fix building TWRP for devices without cache

Some devices do not declare BOARD_CACHEIMAGE_PARTITION_SIZE.
This case is detected and required modules are added to LOCAL_REQUIRED_MODULES.
However, := is used instead of +=  and causes the loss of all previously added modules.
The end result is that twrp is not actually getting built since its module was lost.
Fix that by using += when adding modules required for cache-less devices.

Change-Id: Ib0a4db4955040ced77be7ed04d636905beadf093