tty: serial: ip22zilog: Fix section mispatch warning

ip22zilog_prepare() is now called by driver probe routine, so it
shouldn't be in the __init section any longer.

Fixes: 3fc36ae ("tty: serial: ip22zilog: Use platform device for probing")
Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202604020945.c9jAvCPs-lkp@intel.com/
Signed-off-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
Link: https://patch.msgid.link/20260402102154.136620-1-tbogendoerfer@suse.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Author: Thomas Bogendoerfer

drivers/tty/serial/ip22zilog.c

@@ -1025,7 +1025,7 @@ static struct uart_driver ip22zilog_reg = {
 #endif
 };
 
-static void __init ip22zilog_prepare(struct uart_ip22zilog_port *up)
+static void ip22zilog_prepare(struct uart_ip22zilog_port *up)
 {
 	unsigned char sysrq_on = IS_ENABLED(CONFIG_SERIAL_IP22_ZILOG_CONSOLE);
 	int brg;