event: Convert existing spy records to simple

Very few of the existing event-spy records use the arguments they are
passed. Update them to use a simple spy instead, to simplify the code.

Where an adaptor function is currently used, remove it where possible.

Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/board/keymile/kmcent2/kmcent2.c b/board/keymile/kmcent2/kmcent2.c
index ed552c5..7e65517 100644
--- a/board/keymile/kmcent2/kmcent2.c
+++ b/board/keymile/kmcent2/kmcent2.c
@@ -182,7 +182,7 @@
 	return (gd->bus_clk / 2);
 }
 
-static int kmcent2_misc_init_f(void *ctx, struct event *event)
+static int kmcent2_misc_init_f(void)
 {
 	/* configure QRIO pis for i2c deblocking */
 	i2c_deblock_gpio_cfg();
@@ -210,7 +210,7 @@
 
 	return 0;
 }
-EVENT_SPY(EVT_MISC_INIT_F, kmcent2_misc_init_f);
+EVENT_SPY_SIMPLE(EVT_MISC_INIT_F, kmcent2_misc_init_f);
 
 #define USED_SRDS_BANK 0
 #define EXPECTED_SRDS_RFCK SRDS_PLLCR0_RFCK_SEL_100