Char: riscom8, change rc_init_drivers prototype

Let compiler decide if the rc_init_drivers function will be inlined and
mark it as __init, because it's called only from __init function.
Signed-off-by: NJiri Slaby <jirislaby@gmail.com>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

drivers/char/riscom8.c

@@ -1618,7 +1618,7 @@ static const struct tty_operations riscom_ops = {
 	.tiocmset = rc_tiocmset,
 };
 
-static inline int rc_init_drivers(void)
+static int __init rc_init_drivers(void)
 {
 	int error;
 	int i;