target/arm: Correct comments about M-profile FPSCR

The M-profile FPSCR LTPSIZE is bits [18:16]; this is the same
field as A-profile FPSCR Len, not Stride. Correct the comment
in vfp_get_fpscr().

We also implemented M-profile FPSCR.QC, but forgot to delete
a TODO comment from vfp_set_fpscr(); remove it now.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20240628142347.1283015-2-peter.maydell@linaro.org
1 file changed