android: add soong building rules

android: add soong building rules

Android.bp and building rules including Android specific .go files
are imported from oreo-x86 llvm 3.9 branch to the release_70 branch

cd ~/oreo-x86_kernel/external
git clone https://github.com/llvm-mirror/llvm llvm70
cd ~/oreo-x86_kernel/external/llvm70
git reset --hard
git fetch llvm-mirror release_70
git checkout FETCH_HEAD
git clean -dxf

cd ~/oreo-x86_kernel/external/llvm
find . -name 'Android.bp' -exec cp -v --parents {} ~/oreo-x86_kernel/external/llvm70 \;
find . -name 'Android.bp' -exec git -C /home/utente/oreo-x86_kernel/external/llvm70 add {} \;

find . -name 'llvm.go' -exec cp -v --parents {} ~/oreo-x86_kernel/external/llvm70 \;
find . -name 'llvm.go' -exec git -C /home/utente/oreo-x86_kernel/external/llvm70 add {} \;

find . -name 'tblgen.go' -exec cp -v --parents {} ~/oreo-x86_kernel/external/llvm70 \;
find . -name 'tblgen.go' -exec git -C /home/utente/oreo-x86_kernel/external/llvm70 add {} \;

find . -name 'android_test.sh' -exec cp -v --parents {} ~/oreo-x86_kernel/external/llvm70 \;
find . -name 'android_test.sh' -exec git -C /home/utente/oreo-x86_kernel/external/llvm70 add {} \;

find . -name 'AsmParsers.def' -exec cp -v --parents {} ~/oreo-x86_kernel/external/llvm70 \;
find . -name 'AsmParsers.def' -exec git -C /home/utente/oreo-x86_kernel/external/llvm70 add {} \;

find . -name 'AsmPrinters.def' -exec cp -v --parents {} ~/oreo-x86_kernel/external/llvm70 \;
find . -name 'AsmPrinters.def' -exec git -C /home/utente/oreo-x86_kernel/external/llvm70 add {} \;

find . -name 'Disassemblers.def' -exec cp -v --parents {} ~/oreo-x86_kernel/external/llvm70 \;
find . -name 'Disassemblers.def' -exec git -C /home/utente/oreo-x86_kernel/external/llvm70 add {} \;

find . -name 'Targets.def' -exec cp -v --parents {} ~/oreo-x86_kernel/external/llvm70 \;
find . -name 'Targets.def' -exec git -C /home/utente/oreo-x86_kernel/external/llvm70 add {} \;

find . -name 'config.h' -exec cp -v --parents {} ~/oreo-x86_kernel/external/llvm70 \;
find . -name 'config.h' -exec git -C /home/utente/oreo-x86_kernel/external/llvm70 add {} \;

find . -name 'llvm-config.h' -exec cp -v --parents {} ~/oreo-x86_kernel/external/llvm70 \;
find . -name 'llvm-config.h' -exec git -C /home/utente/oreo-x86_kernel/external/llvm70 add {} \;

cd ~/oreo-x86_kernel/external/llvm70