Exercise the generation of SBFX on ARM32 & Thumb-2.

Exercise the generation of the ARM SBFX intruction in
compiler/utils/arm/assembler_arm32_test.cc (ARM
instruction set encoding) and in
compiler/utils/arm/assembler_thumb2_test.cc (Thumb
instruction set encoding).

Change-Id: Ic72683aac6dd6628e227523e352c395e1a63b52e
4 files changed