On MIPS and MIPS64, UseScratchRegisterScope has only one register for the scratch register [1,2],
and TurboAssembler::CallCFunctionHelper runs out of it as fast_c_call_caller_fp_address
uses the register. That causes code generation failures.

As a workaround, this CL reduces the number of nested UseScratchRegisterScope where
the code generation is failing.

[1]: https://chromium.googlesource.com/v8/v8.git/+/dde25872f58951bb0148cf43d6a504ab2f280485/src/mips/assembler-mips.cc#310
[2]: https://chromium.googlesource.com/v8/v8.git/+/dde25872f58951bb0148cf43d6a504ab2f280485/src/mips64/assembler-mips64.cc#287

Change-Id: I0813c656cafdb09ccd6f53d51f3620385e00022f
Reviewed-on: https://chromium-review.googlesource.com/c/1379590Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Commit-Queue: Taiju Tsuiki <tzik@chromium.org>
Cr-Commit-Position: refs/heads/master@{#58344}