[sdks] Fix llvm-llvm32 build

[luhenry]

No description provided.

[luhenry]

@monojenkins backport to 2018-08

[luhenry]

@monojenkins backport to 2018-06

[monojenkins]

@luhenry backporting to 2018-06 failed, the patch results in conflicts:

Applying: [sdks] Fix llvm-llvm32 build
Using index info to reconstruct a base tree...
M	llvm/SUBMODULES.json
M	sdks/builds/llvm.mk
Falling back to patching base and 3-way merge...
Auto-merging sdks/builds/llvm.mk
CONFLICT (content): Merge conflict in sdks/builds/llvm.mk
Auto-merging llvm/SUBMODULES.json
CONFLICT (content): Merge conflict in llvm/SUBMODULES.json
error: Failed to merge in the changes.
Patch failed at 0001 [sdks] Fix llvm-llvm32 build

Please backport manually!

[luhenry]

@monojenkins build failed

[luhenry]

@monojenkins build Linux WebAssembly

[luhenry]

@monojenkins build OS X x64 iOS SDK

[luhenry]

@monojenkins build Linux x64 FullAOT

[luhenry]

@monojenkins build Linux x64 FullAOT+LLVM

[luhenry]

@monojenkins build Windows i386

[luhenry]

@monojenkins backport to 2018-08

[monojenkins]

@luhenry backporting to 2018-08 failed, the patch results in conflicts:

Applying: [sdks] Fix llvm-llvm32 build
Applying: [wasm] Make sure we compile wasm-cross as 32bits
Using index info to reconstruct a base tree...
M	sdks/builds/wasm.mk
Falling back to patching base and 3-way merge...
Auto-merging sdks/builds/wasm.mk
CONFLICT (content): Merge conflict in sdks/builds/wasm.mk
error: Failed to merge in the changes.
Patch failed at 0002 [wasm] Make sure we compile wasm-cross as 32bits

Please backport manually!