community/btop: use upstream patch to fix lfs64 issue
Fixes error found during 3.19 rebuild: https://build.alpinelinux.org/buildlogs/build-3-19-x86_64/community/btop/btop-1.2.13-r1.log
Fixes error found during 3.19 rebuild: https://build.alpinelinux.org/buildlogs/build-3-19-x86_64/community/btop/btop-1.2.13-r1.log