Inspect only bit 16 for the Little Endian test.  Correct comment preceding
the target_disas() function.  Correct grammar in comment for flags processing.

Signed-off-by: Tom Musta <tommusta@gmail.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Alexander Graf <agraf@suse.de>