hsail-x86: fix addr_range_map error

683f411dca introduced changes to the addr_range_map's
"find" method. Nikos replaced the relevant code with a new
"contains" method. Propagate the changes to the gpu-compute
code.

Change-Id: I8cfe3b15cbfb476685b0ed5ba423ea5a8f1000d8
Reviewed-on: https://gem5-review.googlesource.com/12107
Reviewed-by: Jason Lowe-Power <jason@lowepower.com>
Reviewed-by: Anthony Gutierrez <anthony.gutierrez@amd.com>
Maintainer: Anthony Gutierrez <anthony.gutierrez@amd.com>

hsail: Get rid of an inert private member of StorageSpace.

The "segment" private element in this class was only ever set to zero
on construction, and then used to index into a list of segment names
to get the string "none" in a DPRINTF. If debugging was turned off,
there would be no consumers of that variable, and that upset g++. This
change removes the essentially useless variable, and also that bit of
text in the DPRINTF.

Change-Id: I3f85db4af5f0678768243daf84b8d698350af931
Reviewed-on: https://gem5-review.googlesource.com/9221
Reviewed-by: Anthony Gutierrez <anthony.gutierrez@amd.com>
Maintainer: Anthony Gutierrez <anthony.gutierrez@amd.com>

gpu-compute, hsail: make the PC a byte address, not an instruction index

currently the PC is incremented on an instruction granularity, and not as an
instruction's byte address. machine ISA instructions assume the PC is a byte
address, and is incremented accordingly. here we make the GPU model, and the
HSAIL instructions treat the PC as a byte address as well.

gpu-compute: AMD's baseline GPU model