[XRay] ARM, Hexagon, and MIPS do not support `patchable-function-entry=x`

[duk-37]

See here, here, and here.

Valid implementation on AArch64

[llvmbot]

@llvm/issue-subscribers-backend-mips

[llvmbot]

@llvm/issue-subscribers-backend-arm

[llvmbot]

@llvm/issue-subscribers-backend-hexagon