[PATCH v2 7/7] riscv: Add some comments to start.S

[Rick Chen]

> This adds comments regarding the ordering and purpose of certain
> instructions as I understand them.
>
> Signed-off-by: Sean Anderson <seanga2 at gmail.com>
> ---
>
> Changes in v2:
> - Clarify comments regarding tp
>
>  arch/riscv/cpu/start.S | 19 +++++++++++++++++--
>  1 file changed, 17 insertions(+), 2 deletions(-)
>

Reviewed-by: Rick Chen <rick at andestech.com>