This patch refactors the HIP tool chain for new HIP tool chain, HIPSPV tool chain, which is added in the follow up patch part 2. * Renames HIPToolChain to HIPAMDToolChain and Renames HIP.* files to HIPAMD.*. * Introduces HIPUtility.* file where common HIP utilities, shared among HIP tool chain implementations, are placed. * Move constructHIPFatbinCommand() and constructGenerateObjFileFromHIPFatBinary() to HIPUtility. HIPSPV tool chain is going to use them. * Tweaks bundle target ID in constructHIPFatbinCommand(): extra dashes are dropped if the Target ID is empty and 'hip' offload kind is default for non-AMD targets.

This patch refactors the HIP tool chain for new HIP tool chain, HIPSPV tool chain, which is added in the follow up patch part 2. * Renames HIPToolChain to HIPAMDToolChain and Renames HIP.* files to HIPAMD.*. * Introduces HIPUtility.* file where common HIP utilities, shared among HIP tool chain implementations, are placed in. * Move constructHIPFatbinCommand() and constructGenerateObjFileFromHIPFatBinary() to HIPUtility. HIPSPV tool chain is going to use them. * Tweaks bundle target ID in constructHIPFatbinCommand(): extra dashes are dropped if the Target ID is empty and 'hip' offload kind is default for non-AMD targets.

This patch refactors the HIP tool chain for new HIP tool chain, HIPSPV tool chain, which is added in the follow up patch part 2. * Renames HIPToolChain to HIPAMDToolChain and Renames HIP.* files to HIPAMD.*. * Introduces HIPUtility.* file where common HIP utilities, shared among HIP tool chain implementations, are placed in. * Move constructHIPFatbinCommand() and constructGenerateObjFileFromHIPFatBinary() to HIPUtility. HIPSPV tool chain is going to use them. * Tweaks bundle target ID in constructHIPFatbinCommand(): extra dashes are dropped if the Target ID is empty and 'hip' offload kind is default for non-AMD targets.