ARM: shmobile: sh7372: Use shmobile_init_delay()

Adjust the sh7372 SoC support code to use shmobile_init_delay()
together with CPU Frequency settings from the DTS. Get rid of the
C code version.
Signed-off-by: NMagnus Damm <damm+renesas@opensource.se>
Signed-off-by: NSimon Horman <horms+renesas@verge.net.au>

arch/arm/mach-shmobile/setup-sh7372.c

@@ -984,7 +984,7 @@ void __init sh7372_add_early_devices(void)
 
 void __init sh7372_add_early_devices_dt(void)
 {
-	shmobile_setup_delay(800, 1, 3); /* Cortex-A8 @ 800MHz */
+	shmobile_init_delay();
 
 	sh7372_add_early_devices();
 }