[HIP] Instruct lld to go through all archives

Add the --whole-archive flag when linking HIP programs to instruct lld
to go through every archive library to link in all the kernel functions
(entry pointers to the GPU program); otherwise, lld may skip some
library files if there are no more symbols that need to be resolved.

Differential Revision: https://reviews.llvm.org/D152207

Change-Id: I084d3d606f9cee646f9adc65f4b648c9bcb252e6