Use commonly accepted styles: newlines after declarations and before
return to make the code more readable.
Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com>
Avoid getting messages from multiple harts mingled into garbage text
with a spinlock serializing calls to sbi_puts() and sbi_printf().
Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com>