Use of clang-offload-bundler needs to be updated

[shiltian]

We are moving to enforce 4-tuple triple in the bundle id. Specifically, the bundle id in -targets= has to be in the form of:

<kind>-<4-tuple-triple>[-<target id>[:<target features>]]

where <4-tuple-triple> is arch-vendor-os-env. For host, it will be something like host-x86_64-unknown-linux-gnu ; for AMDGPUs, it will be amdgcn-amd-amdhsa-unknown or even amdgcn-amd-amdhsa-.

Please update the use accordingly to avoid any potential break.