xen: fix two errors when debug is enabled

This patch fixes:
1. build error in xen_pt.c when XEN_PT_LOGGING_ENABLED is defined
2. debug output format string error when DEBUG_XEN is defined

In the second case I also have the output info in consistent with the
output in mapping function - that is, print start_addr instead of
phys_offset.

Signed-off-by: Sander Eikelenboom <[email protected]>
Signed-off-by: Wei Liu <[email protected]>
Signed-off-by: Stefano Stabellini <[email protected]>
diff --git a/xen-all.c b/xen-all.c
index 9a27899..4a594bd 100644
--- a/xen-all.c
+++ b/xen-all.c
@@ -369,8 +369,8 @@
     phys_offset = physmap->phys_offset;
     size = physmap->size;
 
-    DPRINTF("unmapping vram to %"HWADDR_PRIx" - %"HWADDR_PRIx", from ",
-            "%"HWADDR_PRIx"\n", phys_offset, phys_offset + size, start_addr);
+    DPRINTF("unmapping vram to %"HWADDR_PRIx" - %"HWADDR_PRIx", at "
+            "%"HWADDR_PRIx"\n", start_addr, start_addr + size, phys_offset);
 
     size >>= TARGET_PAGE_BITS;
     start_addr >>= TARGET_PAGE_BITS;