Hexagon (target/hexagon) Add overrides for disabled idef-parser insns

Hexagon (target/hexagon) Add overrides for disabled idef-parser insns

The following have overrides
    S2_insert
    S2_insert_rp
    S2_asr_r_svw_trun
    A2_swiz

These instructions have semantics that write to the destination
before all the operand reads have been completed.  Therefore,
the idef-parser versions were disabled with the short-circuit patch.

Test cases added to tests/tcg/hexagon/read_write_overlap.c

Signed-off-by: Taylor Simpson <tsimpson@quicinc.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20230427230012.3800327-16-tsimpson@quicinc.com>