[compiler-rt] [AArch64][compiler-rt] Guard sme-abi-vg.c with !defined(DISABLE_AARCH64_FMV) (PR #94973)

[Kerry McLaughlin via llvm-commits]

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@@ -4,6 +4,8 @@
 
 #include "../cpu_model/aarch64.h"
 
+#if !defined(DISABLE_AARCH64_FMV)
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kmclaughlin-arm wrote:

I've added a warning to CMakeLists where we enable the SME ABI routines, though I can change this to an error if that would be more appropriate?

https://github.com/llvm/llvm-project/pull/94973