soc/*: mp_run_on_all_cpus: Remove configurable timeout

Some timeouts given were too small when serial console is enabled due to
its spinlock making code runtime worse with every AP present.

In addition we usually don't know how long specific code runs and how
long ago it was sent to the APs.

Remove the timeout argument from mp_run_on_all_cpus and instead wait up
to 1 second, to prevent possible crashing of secondary APs still
processing the old job.

Tested on Supermicro X11SSH-TF.

Change-Id: I456be647b159f7a2ea7d94986a24424e56dcc8c4
Signed-off-by: Patrick Rudolph <patrick.rudolph@9elements.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/34587
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Philipp Deppenwiese <zaolin.daisuki@gmail.com>

src/soc/intel/apollolake/chip.c

@@ -764,7 +764,7 @@ struct chip_operations soc_intel_apollolake_ops = {
 static void drop_privilege_all(void)
 {
 	/* Drop privilege level on all the CPUs */
-	if (mp_run_on_all_cpus(&cpu_enable_untrusted_mode, NULL, 1000) < 0)
+	if (mp_run_on_all_cpus(&cpu_enable_untrusted_mode, NULL) < 0)
 		printk(BIOS_ERR, "failed to enable untrusted mode\n");
 }