scsi: fix typo in setup_read_ext()

This clears the 6th byte of cmd twice rather than setting the 9th byte
to 0. Fix it.

The only other command that sets the 9th byte is the 64-bit read, so
this likely never caused issues in practise.

Signed-off-by: Caleb Connolly <caleb.connolly@linaro.org>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
1 file changed