HIP supports compiling kernels from LLVM IR into executable.
The device LLVM IR needs to be compiled into a fat binary
object. This device object is embedded into a host object using
llvm-mc directives. Then, any host linker may link the host and
device objects together into an executable. A README was added.
Change-Id: I8ebb6ae86b7ab4290f7cba2eea5584d73a7c453e
Aaron En Ye Shi
8a5b8a36f2