[CodeView] Add pragma push/pop_macro for ARM64_FPSR to enum header

[compnerd]

This fixes (one aspect of) compilation of LLDB with MSVC for ARM64.

LLDB source files include intrin.h, and the MSVC intrin.h transitively
includes arm64intr.h, which has an ARM64_FPSR define, which clashes
with the enum declaration.

Differential Revision: https://reviews.llvm.org/D67864

llvm-svn: 372481
(cherry picked from commit 1bfdab5)

[compnerd]

CC: @shahmishal @JDevlieghere @dcci @dexonsmith @Bigcheese @hyp

[compnerd]

This is needed for the Windows ARM64 support

[compnerd]

@swift-ci please smoke test

[shahmishal]

@swift-ci please test

[hyp]

@shahmishal

llvm-lit: /Users/buildnode/jenkins/workspace/apple-llvm-project-pr-macos/llvm-project/llvm/utils/lit/lit/LitConfig.py:109: fatal: Setting a timeout per test not supported. Requires the Python psutil module but it could not be found. Try installing it via pip or via your operating system's package manager.

[shahmishal]

@shahmishal

llvm-lit: /Users/buildnode/jenkins/workspace/apple-llvm-project-pr-macos/llvm-project/llvm/utils/lit/lit/LitConfig.py:109: fatal: Setting a timeout per test not supported. Requires the Python psutil module but it could not be found. Try installing it via pip or via your operating system's package manager.

I will double check why this node does not have this package installed.