linux-sony-amami: modernize with new gcc8 linux aportgen code
Builds and boots on Xperia Z1 compact sonyxperiadev kernel (3.10.x) is newer than the Lineage OS suggested by aportgen (3.4.x) gcc8-fix-put-user.patch in .shared-patches doesn't apply cleanly on the sonyxperiadev kernel, hence the local version