Fix stub_test for Mips64

Force ENTRY macro to load GP. Instead .cpload (used for o32 abi,
not working for n64) use .cpsetup to set up GP and save previous
GP value.

Fix expectations in GetSet32Static.

Change-Id: Ie97e32fa2fee7a6e8bae6bc36e78976b8be62b79
4 files changed