tty: m68k: nfcon: convert to u8 and size_t

Switch character types to u8 and sizes to size_t. To conform to
characters/sizes in the rest of the tty layer.
Signed-off-by: "Jiri Slaby (SUSE)" <jirislaby@kernel.org>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: linux-m68k@lists.linux-m68k.org
Reviewed-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Link: https://lore.kernel.org/r/20231206073712.17776-15-jirislaby@kernel.orgSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

arch/m68k/emu/nfcon.c

@@ -23,9 +23,9 @@ static int stderr_id;
 static struct tty_port nfcon_tty_port;
 static struct tty_driver *nfcon_tty_driver;
 
-static void nfputs(const char *str, unsigned int count)
+static void nfputs(const u8 *str, size_t count)
 {
-	char buf[68];
+	u8 buf[68];
 	unsigned long phys = virt_to_phys(buf);
 
 	buf[64] = 0;