soc: quicklogic: move init code from SYS_INIT to hooks

Replace SYS_INIT with SoC hooks and adapt SoC init code

Signed-off-by: Anas Nashif <anas.nashif@intel.com>

soc/quicklogic/eos_s3/Kconfig

@@ -8,3 +8,4 @@ config SOC_EOS_S3
 	select CPU_HAS_ARM_MPU
 	select CPU_HAS_FPU
 	select EOS_S3_HAL
+	select SOC_EARLY_INIT_HOOK

soc/quicklogic/eos_s3/soc.c

@@ -50,7 +50,7 @@ static void eos_s3_cru_init(void)
 
 
 
-static int eos_s3_init(void)
+void soc_early_init_hook(void)
 {
 	/* Clocks setup */
 	eos_s3_lock_enable();
@@ -64,8 +64,4 @@ static int eos_s3_init(void)
 
 	/* Enable UART interrupt */
 	INTR_CTRL->OTHER_INTR_EN_M4 = UART_INTR_EN_M4;
-
-	return 0;
 }
-
-SYS_INIT(eos_s3_init, PRE_KERNEL_1, 0);