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/arch/sandbox/cpu/start.c b/arch/sandbox/cpu/start.c
index 2346528..1026898 100644
--- a/arch/sandbox/cpu/start.c
+++ b/arch/sandbox/cpu/start.c
@@ -119,12 +119,7 @@
 
 	os_exit(0);
 }
-
-static int sandbox_misc_init_f(void *ctx, struct event *event)
-{
-	return sandbox_early_getopt_check();
-}
-EVENT_SPY(EVT_MISC_INIT_F, sandbox_misc_init_f);
+EVENT_SPY_SIMPLE(EVT_MISC_INIT_F, sandbox_early_getopt_check);
 
 static int sandbox_cmdline_cb_help(struct sandbox_state *state, const char *arg)
 {