Fix 32bit xen-tools build.

This fixes building 32bit xen-tools on a amd64 machine, i.e.
"XEN_TARGET_ARCH=x86_32 make".

For ioemu I've taken the lazy path and just disabled them for
cross-builds, I'll leave that to fix to someone who knows the
qemu makefiles better than I do ;)

Signed-off-by: Gerd Hoffmann <kraxel@suse.de>
---
 config/x86_32.mk |    6 ++++--
 tools/Makefile   |    2 +-
 2 files changed, 5 insertions(+), 3 deletions(-)

Index: xen-3.3.0-testing/config/x86_32.mk
===================================================================
--- xen-3.3.0-testing.orig/config/x86_32.mk
+++ xen-3.3.0-testing/config/x86_32.mk
@@ -7,7 +7,10 @@ CONFIG_MIGRATE := y
 CONFIG_XCUTILS := y
 CONFIG_IOEMU := y
 
-CFLAGS += -m32 -march=i686
+CFLAGS  += -m32 -march=i686
+LDFLAGS += -m32
+ASFLAGS += -m32
+LIBDIR  := lib
 
 # Use only if calling $(LD) directly.
 LDFLAGS_DIRECT_OpenBSD = _obsd
Index: xen-3.3.0-testing/tools/Makefile
===================================================================
--- xen-3.3.0-testing.orig/tools/Makefile
+++ xen-3.3.0-testing/tools/Makefile
@@ -24,7 +24,7 @@ SUBDIRS-y += libfsimage
 SUBDIRS-$(LIBXENAPI_BINDINGS) += libxen
 SUBDIRS-y += fs-back
 
-ifeq (ioemu,$(CONFIG_QEMU))
+ifeq ($(XEN_COMPILE_ARCH)$(CONFIG_IOEMU),$(XEN_TARGET_ARCH)y)
 SUBDIRS-$(CONFIG_IOEMU) += ioemu
 else
 SUBDIRS-$(CONFIG_IOEMU) += ioemu-dir