Revert "Use broadcast SIPI to startup siblings"

This reverts commit 042c1461fb.

It turned out that sending IPIs via broadcast doesn't work on
Sandybridge. We tried to come up with a solution, but didn't
found any so far. So revert the code for now until we have
a working solution.

Change-Id: I7dd1cba5a4c1e4b0af366b20e8263b1f6f4b9714
Signed-off-by: Sven Schnelle <svens@stackframe.org>
Reviewed-on: http://review.coreboot.org/1381
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>

src/cpu/intel/model_106cx/Kconfig

@@ -3,12 +3,10 @@ config CPU_INTEL_MODEL_106CX
 	select SMP
 	select SSE2
 	select UDELAY_LAPIC
-
-if CPU_INTEL_MODEL_106CX
+	select AP_IN_SIPI_WAIT
 
 config CPU_ADDR_BITS
 	int
 	default 32
 
-endif
 

src/cpu/intel/model_106cx/model_106cx_init.c

@@ -27,6 +27,7 @@
 #include <cpu/x86/lapic.h>
 #include <cpu/intel/microcode.h>
 #include <cpu/intel/speedstep.h>
+#include <cpu/intel/hyperthreading.h>
 #include <cpu/x86/cache.h>
 #include <cpu/x86/name.h>
 #include <usbdebug.h>
@@ -177,6 +178,9 @@ static void model_106cx_init(device_t cpu)
 	configure_misc();
 
 	/* TODO: PIC thermal sensor control */
+
+	/* Start up my cpu siblings */
+	intel_sibling_init(cpu);
 }
 
 static struct device_operations cpu_dev_ops = {