Declarations for static symbols are useless repetition unless there are
cyclic dependencies.

Reorder the functions and variables to get rid of 4 forward declarations.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Link: https://lore.kernel.org/r/20220924135738.234051-2-u.kleine-koenig@pengutronix.deSigned-off-by: Guenter Roeck <linux@roeck-us.net>