usb: chipidea: add inline for ci_hdrc_host_driver_init if host is not defined

Otherwise, there is a build warning if this header file is included
by non host source file, eg, otg.c.

Signed-off-by: Jun Li <[e-mail]>
Signed-off-by: Peter Chen <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Greg Kroah-Hartman <[e-mail]>

drivers/usb/chipidea/host.h

···
 
 }
 
-static void ci_hdrc_host_driver_init(void)
+static inline void ci_hdrc_host_driver_init(void)
 {
 
 }