Replace hlt with halt()

There were instances of unneeded arch/hlt.h includes,
various hlt() calls that weren't supposed to exit (but
might have) and various forms of endless loops around
hlt() calls.

All these are sorted out now: unnecessary includes are
dropped, hlt() is uniformly replaced with halt() (except
in assembly, obviously).

Change-Id: I3d38fed6e8d67a28fdeb17be803d8c4b62d383c5
Signed-off-by: Patrick Georgi <pgeorgi@google.com>
Reviewed-on: http://review.coreboot.org/7608
Tested-by: build bot (Jenkins)
Reviewed-by: Edward O'Callaghan <eocallaghan@alterapraxis.com>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>

src/mainboard/iei/juki-511p/romstage.c

@@ -22,7 +22,6 @@
 #include <device/pci_def.h>
 #include <arch/io.h>
 #include <device/pnp_def.h>
-#include <arch/hlt.h>
 #include <console/console.h>
 #include "superio/winbond/w83977f/early_serial.c"
 #include "southbridge/amd/cs5530/enable_rom.c"

src/mainboard/iei/nova4899r/romstage.c

@@ -22,7 +22,6 @@
 #include <device/pci_def.h>
 #include <arch/io.h>
 #include <device/pnp_def.h>
-#include <arch/hlt.h>
 #include <console/console.h>
 #include "superio/winbond/w83977tf/early_serial.c"
 #include "southbridge/amd/cs5530/enable_rom.c"

src/mainboard/iei/pcisa-lx-800-r10/romstage.c

@@ -23,7 +23,6 @@
 #include <device/pci_def.h>
 #include <arch/io.h>
 #include <device/pnp_def.h>
-#include <arch/hlt.h>
 #include <console/console.h>
 #include "cpu/x86/bist.h"
 #include "cpu/x86/msr.h"

src/mainboard/iei/pm-lx-800-r11/romstage.c

@@ -22,7 +22,6 @@
 #include <stdlib.h>
 #include <spd.h>
 #include <arch/io.h>
-#include <arch/hlt.h>
 #include <device/pci_def.h>
 #include <device/pnp_def.h>
 #include <console/console.h>

src/mainboard/iei/pm-lx2-800-r10/romstage.c

@@ -23,7 +23,6 @@
 #include <stdlib.h>
 #include <spd.h>
 #include <arch/io.h>
-#include <arch/hlt.h>
 #include <device/pci_def.h>
 #include <device/pnp_def.h>
 #include <console/console.h>