event: Convert misc_init_f() to use events

This hook can be implmented using events, for the three boards that
actually use it.

Add the event type and event handlers. Drop CONFIG_MISC_INIT_F since we
can just use CONFIG_EVENT to control this. Since sandbox always enables
CONFIG_EVENT, we can drop the defconfig lines there too.

Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/board/google/chromebook_coral/coral.c b/board/google/chromebook_coral/coral.c
index 182cf75..9e23f5c 100644
--- a/board/google/chromebook_coral/coral.c
+++ b/board/google/chromebook_coral/coral.c
@@ -10,6 +10,7 @@
 #include <command.h>
 #include <cros_ec.h>
 #include <dm.h>
+#include <event.h>
 #include <init.h>
 #include <log.h>
 #include <sysinfo.h>
@@ -32,11 +33,12 @@
 	int flags;
 };
 
-int misc_init_f(void)
+static int coral_check_ll_boot(void *ctx, struct event *event)
 {
 	if (!ll_boot_init()) {
 		printf("Running as secondary loader");
-		if (gd->arch.coreboot_table) {
+		if (CONFIG_IS_ENABLED(COREBOOT_SYSINFO) &&
+		    gd->arch.coreboot_table) {
 			int ret;
 
 			printf(" (found coreboot table at %lx)",
@@ -55,6 +57,7 @@
 
 	return 0;
 }
+EVENT_SPY(EVT_MISC_INIT_F, coral_check_ll_boot);
 
 int arch_misc_init(void)
 {
diff --git a/board/keymile/kmcent2/kmcent2.c b/board/keymile/kmcent2/kmcent2.c
index ca24b96..4486538 100644
--- a/board/keymile/kmcent2/kmcent2.c
+++ b/board/keymile/kmcent2/kmcent2.c
@@ -6,6 +6,7 @@
  * Copyright 2013 Freescale Semiconductor, Inc.
  */
 
+#include <event.h>
 #include <asm/cache.h>
 #include <asm/fsl_fdt.h>
 #include <asm/fsl_law.h>
@@ -181,7 +182,7 @@
 	return (gd->bus_clk / 2);
 }
 
-int misc_init_f(void)
+static int kmcent2_misc_init_f(void *ctx, struct event *event)
 {
 	/* configure QRIO pis for i2c deblocking */
 	i2c_deblock_gpio_cfg();
@@ -209,6 +210,7 @@
 
 	return 0;
 }
+EVENT_SPY(EVT_MISC_INIT_F, kmcent2_misc_init_f);
 
 #define USED_SRDS_BANK 0
 #define EXPECTED_SRDS_RFCK SRDS_PLLCR0_RFCK_SEL_100
diff --git a/board/keymile/pg-wcom-ls102xa/pg-wcom-ls102xa.c b/board/keymile/pg-wcom-ls102xa/pg-wcom-ls102xa.c
index 467f110..ed8142d 100644
--- a/board/keymile/pg-wcom-ls102xa/pg-wcom-ls102xa.c
+++ b/board/keymile/pg-wcom-ls102xa/pg-wcom-ls102xa.c
@@ -4,6 +4,7 @@
  */
 
 #include <common.h>
+#include <event.h>
 #include <i2c.h>
 #include <asm/io.h>
 #include <asm/arch/immap_ls102xa.h>
@@ -109,12 +110,14 @@
 	return 0;
 }
 
-int misc_init_f(void)
+static int pg_wcom_misc_init_f(void *ctx, struct event *event)
 {
 	if (IS_ENABLED(CONFIG_PG_WCOM_UBOOT_UPDATE_SUPPORTED))
 		check_for_uboot_update();
+
 	return 0;
 }
+EVENT_SPY(EVT_MISC_INIT_F, pg_wcom_misc_init_f);
 
 int board_init(void)
 {