[llvm-dev] Proposed patches for Android Build errors

[Mauro Rossi via llvm-dev]

Hi,
I'm sending two proposed patches to avoid building errors in llvm70 master

With you compiler/buildchain you may not see these errors, 
but they are happening with Android Build System (oreo-x86 based on 8.1.0_r18)

Please review and correct them if needed

Mauro Rossi
android-x86 team

[PATCH 1/2] AMDGPU/SIInsertWaitcnts: Fix comparison of integers of diff signs
[PATCH 2/2] Object/WasmObjectFile: Fix comparison of different signs