Use non vixl arm macro assembler

The VIXL one hits an assertion error for CC:
external/vixl/src/aarch32/macro-assembler-aarch32.h:1386:
void vixl::aarch32::MacroAssembler::Cmp(vixl::aarch32::Condition,
vixl::aarch32::Register, const vixl::aarch32::Operand &):
Assertion `!AliasesAvailableScratchRegister(rn)' failed.

Fixes dump-oat-boot with CC.

Test: test-art-target, N6P booting

Change-Id: I781fe8c8c2d6cd8b246ee4509281d6c645c89a28